I've started roller processing my roll film in the stainless steel tanks. It takes 1/2 the chemistry since I only need to fill up the tanks 1/2 way. It's worked PERFECTLY since the first time. What I do I use a PLASTIC cap tank and put it in a disused cibachrome drum (smooth inside) and on the roller base. I fill it up half way and use the SAME dev times! I was amazed that the experiment worked. I've been doing this for a month now with no problems. Stainless caps you don't want to even try--not only because of the leaking problems but also because the plastic cap provides a ridge to keep the tank from rolling in the cibachrome drum. Most drums will pull in or push out, so you have to put the tank on one side or the other so when it rolls, you it "sucks in" the tank and it rides on the plastic cap ridge against the edge of the cibachrome drum. See pic. I now use 16 oz to develop 2-120 rolls in the 32 oz tank. AND my hands are now free! note--the tank/tube can't be centered--it has to be offset to keep the tank balanced up there--that's a 32 oz tank with 2 120 reels in it.