I stopped by my local Toro dealer to get a sense of what the warranty would cover. The guy I spoke to, who really seemed to know his stuff, was pretty adamant that only defects in materials or workmanship were fair game. He added that ever time you use a mower, wear items start to accumulate, etc., leading me to think they would probably err on the side of pointing to normal wear and tear as the cause of any problems. The overall impression I got was that unless the engine is bolted on upside down, a wheel has a giant flat area on it when you take the mower out of the box, or the cylinder head starts leaking oil during the first use, it's going to be tough to pursue a warranty claim. Given that the repair backlog is a month at the moment, and given that the issues of concern to me are minor and easily fixed (by me), I think I'll just order parts on my own dime, do the repairs, and get back to smelling freshly-cut grass.

From your photo, the waves aren't the only problem. Filler should be present in the spaces between the boards. I think this was a rush job and it was poorly done. I really don't believe that the problem with the waves is because your floors are springy. I think it's their drum sander. I am wondering how many people they've told the same story to about those waves... What sort of contractor is the person who did your floor and did you check to make sure he has a license? I would not let them do any further work on the floor, especially since they are telling you they can't fix it and also because there's more than one problem with their work. I agree that you need someone with a trio, or one of the other (similar) machines. If you let them sand more on your floor, when they are telling you they can't fix it, you are just letting them sand wood off of your floors, reducing the lifespan of your wood, for no reason (because you'll end up with the same results, and it'll need to be done again). You will definitely end up with waves again when they use the same drum sander they used the first time.

I know this is an old thread but I felt the need to reply. We used Bona Traffic 5 years ago using spice brown stain followed by the Satin poly HD 2 part system. I remember back then it stated the darker color allow 12 hour dry time which we did. Then we applied two coats of finish. I recall that it took longer then 2 weeks to fully set and get solid but eventually it did and worked out great. Fast forward we got a new house. Great wood floors. Again we refinished them using the Bona HD traffic 2 part system in semi gloss. We used a lighter finish this time which stated on the stain can stated to allow 2-3 hours drying time in normal humidity. So this time around we followed the instructions and allowed 3 hours for the stain to dry on a lovely 75 degree sunny day. I did not go heavy on the stain and I would use a dry cloth to buff out the excess as I went along. Everything looked great. We have experience with the sanding so we spent roughly 10 hours using the different grits down to the 100 grit as the final step as instructed. Floors were lovely and down to the bare unadultured wood. We then vacuumed them and got every last bit of dust off using special footies as to not contaminate the floor with our feet. We could not have followed the instructions more perfectly. In fact we researched for a week and spoke to a floor refinishing company just to insure we did things 100% correctly. Well here we are now, 12 days in and I can scratch this off with my nail in many places. I am not talking just a scratch in the wood, but a peeling of the top coat scraping down to and exposing bare wood. I am sick to my stomach. The floor will not last. It is supposed to be strong like for a gym. This would not hold up to a room of infants. We luckily were finishing in a vacant home so nothing was placed on the floor for 10 days. It's not even worth moving all of our heavy furniture and starting over so I am going to put laminate floors over top of this and be done with it. I called Bona and they told me that they suggest 8 hour stain drying time. Well then why the heck would you state on your product 2-3 hours? Human error on my part? I think not I did everything that Bona said. Disgusted with the product. I should have used a cheaper oil base from the big box store. Biggest regret of my life. Perhaps Bona stored the product in a cold warehouse? Maybe it was a faulty batch with bad hardener? I have no idea but it behaves like something that did not have hardener. However I checked the unused bottle the next day and it was solidifying in the jug. Something failed and I can't understand what because I followed Bona instructions to a T.

I was going to say something similar to Lomo's comment (except I don't agree with the analogy to marble, since marble is still gorgeous even with etches and stains, you still have that beauty that is marble). You could get the best concrete refinisher in the universe, or you could refinish it DIY, it won't make a difference, because in a couple of months you will have new stains and etches. Why don't you do yourself a favor and replace that counter with something attractive and easy-care like granite or Quartz? I would not get a "concrete look Quartz" as was suggested above, because then it will still be ugly in your kitchen. So many other lovely choices in either granite or Quartz. Since the concrete counter was not your choice in the first place, you probably have no attachment to it.