mfalco
Contributor
The soft plates are really designed only for aluminum 80/63 tanks. Negative steel tanks will flop around and roll side to side.
I never thought of that. I only use this setup traveling, so it has always been AL80s. With the AL80, it does feel like the tank is a little loose on your back. I got use to it real quick, and it doesn't bother me. It must be horrible with a negative tank.