thanks Christian, will do. One more question, I know not to use teflon tape on the NPT threads for the zinc and so far I have not seen any leak from the bare threads but I did tighten the cap quite a bit. Is there a problem using a sealer on the threads/ From my old days with an Atomic 4, Don Moyer, the A4 guru, always recommended Permatex Aircraft Sealer, probably because he was an aircraft mechanic before turning to the A4 business. That sealer is a thick, black gooey liquid, I dont want to insulate the threads but I would like to tighten the cap less that I am doing now. Any advice on this subject?