HP-85 Error 74 stall

Hi, I am the proud new owner of an HP 85. Printer belts a little ratty but works fine. However when I attempted to Rew/Load/Cat any of the tapes I received with it I got a stall error. I cleaned the capstan which is intact, and did not fall apart, as I understand they tend to do. The tape motor spins fine when I pressed the tape sensor button inside and hit Rew. Finally after a bunch of attempts the tapes began to spin and I could perform the Load, Cat and Ctape operations. I still seem to get fairly frequent stall errors however. Do you think I need to replace the capstan? Can you get them (or the printer belts)anywhere, or should I use the silicon aquarium tube method mentioned in the archives? Any other thoughts appreciated. Eventually hope to hook it up to a floopy drive but need to find a mass storage rom. Also do you know of any good resources on the web for the 80 series as I haven't found a whole lot. Thanks, RH