My choice to clean the resistance track of a pot is Radio Shack tuner cleaner. I've tried De-Ox-It, but it dissolved the carbon in one instance. Miles B. Anderson, K2CBY 16 Round Pond Lane Sag Harbor, NY 11963 Tel.: (631) 725-4400 Fax.: (631) 725-2223 e-mail: k2cby at optonline.net