My Fujimoto is a CP30, which I believe would be the predecessor to the CP31. I recently tried to duplicate the temperature problem and I noticed a couple of things...
1. Once the temperature finally decided to "settle down" it was never at the same point and it was NOT repeatable
2. Whenever I removed the cover I noticed that the cover was literally dripping wet, which I think may have been the cause of one of my previous problems, green cast in my color prints. I think a slight contamination and excessive temperature was main culprit.
3. When ever I tried to move the pot to set a new temp, I would just barely move it and I could see a 20 degree (or more) temp shift!!
So do you think my Fujimoto is relatively easy to fix?