I recently posted about a "bad pot". The solution warranted a thread of it's own to serve as a stand alone cautionary tail. First this... http://pespmc1.vub.ac.be/OCCAMRAZ.html I spent an inordinate amount of time tracking down an unnecessarily complex solution before considering the possibility of a simple one. A very simple one; a solution that anyone who has worked with electronics for as long as I have should know to try first. If I had been at work I would have been supremely embarrassed and maybe even chastised. I sprayed down the pot with contact cleaner.