In the process of fixing the shower I discovered a major improvement. I took the roll-up shower screen out.
Forgive me for providing the gory details, but that bathroom is tight. For my 6'-1" body to sit on the throne I need to put one foot up on the edge of the shower and sit angled slightly toward the rear of the trailer to get the door closed. For those of you who own this configuration, you understand completely.
Anyway, by taking out the roll-up shower screen out, the wall next to the toilet is effectively shortened by three inches. That makes a HUGE difference. Huge.
So I replaced the screen with a shower curtain and used a few pieces of velcro to keep it attached on the curb-side. I think it looks great, is just as effective and even more functional.