I would stay away from lube with ptfe (Teflon) as the little Teflon particl= es may insulate. Perhaps silicon plumbers grease? There used to be an autom= otive product called dielectric grease, it was silicon I think. Looking forward, Al Shinn (Tinker) --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .