Just bought an old Jen but the plastic gear on the pot was busted as well as the plastic rack. The pot itself is still good but I decided to replace it. Luckily I had parts, put in an old Dunlop Hot Potz I (the one still made of metal) and a new rack and put the pedal back together. Works great but here's my question: the old pot and the new one are 100k pots, is there a difference in sound quality between them? I heard mixed answers.