Original poster: "Jonathan Peakall by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jpeakall-at-mcn-dot-org> I have searched the archives and looked all over for a formula I saw somewhere on the list to determine the total gap on a multi static gap based on transformer power and I think tank caps. If someone could post this or mail it to me, I would be very grateful TIA Jonathan