As one who will need to make do and come up with solutions to problems that are not often the "ideal fix", I would opt for exactly what you are suggesting. Especially since it is not a very visible spot. Our floor is not level, and the low point (over an inch!) comes right where the corner of the tub platform is, making it the MOST obvious visual thing-- so we MUST level the floor (the deck is of course level)... if I had it behind the toilet, I would have done exactly what you suggest.

Dishwasher and stove you could use felt bottoms under the feet. Fridge is a concern. Perhaps these would help. http://www.globalindustrial.com/p/material-handling/hand-trucks-dollies/dollies-machinery-furniture-slides/ez-moves-4-foot-pull-slides-48-l-x-5-w-set-of-2

I would try tl determine the height difference in the room end to end. probably laser level. the cab on the left you provided a pic of will need to be shimmed on the right to flush it with the wall, and then ALL other cabs will need to be shimmed up to match, and who knows how high the last one will need to be shimmed? Are the cabs level now? If so, then shimming flush to the wall will throw off level. The pic you have shows all cabs already installed, so I'm unsure if you have any slack to increase the gap on the left and then use a heftier filler strip. If I had done all this installation and every cabinet was plumb and level, I would likely scribe a really thin filler strip for the left gap. Not ideal but better than leaving the gap or having to redo the entire thing.

I agree he should've contacted the seller of the flooring first, and the seller had the right to explain here. It doesn't give them the right to be rude. After that, it all broke down. It's not clear who's correct on some of these points-- and they do disagree sharply on several points: * the hardness of & degree of level of the subfloor--which WeShipFloors has never seen. Also, no tests were done to see if he truly got a defective batch, since seller was so outraged that the initial contact was BBB--*not* at complaint level--and came out swinging from the start, telling the customer he "screwed up" and "whether you wish to admit it or not." I agree with the seller's point, just not the unprofessional wording. You don't talk that way to a customer, any customer. Including one who believes that an inquiry on BBB is not as bad as a complaint. WeShipFloors came out ready to fight like a 12-year-old whose lemonade stand just got criticized. Also in debate: is this floor soft or not? Points that support that possibility: * Reshaping from heat * Seller's claim that it bent in a gap (again, without any evidence) vs buyer's claim that there is no gap and previous floors didn't bend, etc * The whole issue of, why didn't inferior floors dent with fridge? SuperCore is supposed to be amazingly hard. Yet it was beat out by not one, but two previous floors? Yes, buyer should've covered the floor per instructions. And should've called 1st. But none of that explains the rest of these points. And the seller falsely suggested buyer may be a competitor just trying to smear his company...and then topped it off with accusing the buyer of lying outright...that's it for me. The man was honest that he pulled out the fridge without protecting the floor. The buyer goofed. But the seller's words are far more questionable ("competitor"), rude ("you screwed up"), unproven (misc), and slanderous ("just plain lying"). True or not, we should carry ourselves better than this.