Although I didn't figure out why one adjuster wouldn't work and the other wouldn't hold, I did fix my door. Turned out that the wheels WERE aligned, but that one set wasn't on the tracks. Lifted the door with my wife watching on the floor, and the wheels finally tracked, and the door glides fine now, and it is properly aligned again!

I know I'm late to the conversation here but I just wanted to follow up in case anyone else had the same question. Retractable screens are just as durable as fixed screens but much more pleasing to look at. A quality retractable screen, like the Plisse by Screen Solutions inc, should come with a lifetime warranty that provides peace of mind when investing the associated money into your home. Check out www.plissescreen.com and see for yourself why retractable screens, and in particular the Plisse retractable screen, are a better choice than traditional fixed screens. Here is a link that might be useful: Screen Guy Blog

@meganhowlett did you ever get your Jeldwen door issue solved? I am having same issue, with same jeldwen door (mine has blinds inside glass), and wish I would have seen this thread before having this door installed and trusting my contractor (who has since quit without giving me the paperwork for the door, all because I questioned the door, the installation, and the amount I paid the contractor for the door).

The 100 is hollow if I am not mistaken. https://www.andersenwindows.com/products/100-series-gliding-patio-door/ Both should work just fine from a functionality standpoint. Get the one that you like the look of at the end of the day though. You are, after all, going to be staring at it for years to come.