Ron,
I have used the Jobo for 8x10 with a unicolor roller. The only thing I would say is you have to stay around and make sure the tank doesn't tip and spill the developer on the floor.
I had this happen once over at my parents' house in their bathroom (mine has a window, and theirs doesn't). I stepped out to get something else ready in the kitchen and when I came back, I found a mess. However, despite all this, I went ahead and finished developing after I cleaned up the mess as best I could, and the film came out fine - it was FP4+.
I just fill and empty the tank like I would using a Patterson tank, i.e. manually. I use a tray to do my final rinse with photoflo before hanging up the film in the shower.
I have never actually gotten the foot pump to get the lid off. I must not pump for long enough. I have managed to get it off if I am wearing tennis shoes and hold the tank with my feet while pulling around the edges of the lid. I will try some of the suggestions on here the next time I develop LF.
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