As is common on these engines, I have a weeping rear base gasket. I'm hoping to wait till fall to fix it. I have a 1991 FLSTC that is mostly stock. It does have a mild cam, S&S Super E, Vance and Hines pipes and the Screaming Eagle ignition. I don't ride it very hard very often. I bought this bike recently and have put about 3,000 miles on it. A couple of weeks ago I noticed that the rear cylinder base is weeping some oil. I talked with my local off brand Harley repair shop. He says that all evo's will eventually weep oil from the rear cylinder and that he will fix it for $300. I am a decent wrench and figure I'll do it myself for the cost of parts. And, while I'm in there I'm gonna do both cylinders. With 23,000 miles on the bike I don't plan to replace the piston rings or any of that. Just the base gaskets. What parts do I need to order? My thinking is, Cometic base gaskets (what thickness .10 or .20?), HD Head gaskets and rocker cover gaskets. Any thing else?