You may want to try Channel Master if they still make the stuff or another electrical contact cleaner, check Radio Shack. I believe that these have less oil in them than WD40.
static when adjusting gain control
I have an Audible Illusions L-1 pre amp which produces a sound which I can only describe as STATIC. The static only occurs when I adjust the left chanell gain control and only comes from the left speaker. There is no static once the control is set. There is no such static from the right side control nor is there any from the master volume control. Can this problem be corrected easily? Does it pose a problem if not fixed? Thanks for any advice. John