I'm moving into MF with my recently acquired Pentax 645N. Now comes processing the BW film! I've used Omega/Kinderman whatever stainless steel tanks and reels for 35mm in the past, and in a burst of enthusiasm I bought a 120 reel for the tank. Having read some cautionary tales about loading 120 on stainless steel reels, I wonder if I should use my ancient Paterson? The stainless would save some chemicals, but the Paterson would maintain temperature better. And then there is fumbling with film in the dark.... Any opinions or advice out there?