The wife & I went to look at our new 321 and did a pre-pre-delivery inspection.
We found a few very minor problems and one major one (which my wife was quick to find), if we plan to shower.
The factory installed the wrong sliding shower door. It's about 6" too narrow for the opening.
If there's one on another unit that will fit, my dealer is going to remove it and install it on our unit. If not, they plan to have one express shipped.
I'm not sure if the shower opening width changed from 2016 to our late production 2016 or they simply picked up the wrong glass panels.
I guess that taking a shower isn't part of the factory's quality control procedure.