Ed Palma
Contributor
Thanks for the links for the SP EBs. Now, because of all you guys, I've jumped in a swell with my 1st SP reg rebuild - an older MK10 without the groove for the spec boot. It has a sharp piston edge, and I managed to get one of the newer gray conical seats. Now, after reading EB 242, I'm not sure if I should change the piston, or will the original piston suffice?