I pulled the tank from my 78 XS650SE to clean and repaint it. At some point, someone replaced the original petcocks with the type available from Mike's XS. They leak a dip or so when I switch the lever between off/on/res, etc., so I figured I'd clean and rebuild them while I had everything apart. Went to Mike's XS website, but couldn't find a rebuild kit for these petcocks, so sent a note to customer service. Response was "we don't have a rebuild kit for those petcocks". Really? Anyone have experience with these petcocks and know of a rebiuld kit, or failing that some better petcocks that can be serviced if necessary?