John, how are things?
I just went and looked at the corner shower in the Cruiser and I don't see any type of adjustments.
Sounds like you need to do a little investigation. Is the camper level and not twisted? We had a door in our last trailer that would bind if we were off a little.
Take a look at the floor around the shower. Does it show any signs of warp or swelling from water? Is it trying to lift part of the shower base?
Hope you find the problem.
2016 Duramax - 2010 CF30SKP
Viet Nam Vet 70-71 Da Nang
Real airplanes have two wings and big, round, engines