Purchased and installed a 500 series gear, hoses and pump several months ago on a 1967 Camaro. Works great but has developed a leak around the "adjuster" on top of the gear. The gear was installed and used as it was originally setup so the adjuster has not been used. I've put about 2000 miles on it with no other issues. I'm looking for your recommendation before trying to figure it out myself. Is there an O Ring that could be replaced to resolve this? Thanks.