I hope i,m in the right spot for this post as it falls in general and twin cam. Here's my problem this is a 2007 full dresser touring bike and the primary seal will not stop leaking thru the inner primary seal even after 4 changes. It acts like there is pressure building up in the primary but the primary vent hose is venting even to the point of running a long hose from the vent to a jar of water and yes it does put out occasional bubbles. This is how it all started. A man brought me this bike to change the starter to all balls and the new screaming eagle compensator to get rid of all the racket from the comp. All went well new seals and gaskets by the book and he left on his trip. About 1500 miles later he was back with a primary leak. At tear down yes the primary seal was leaking at the bearing race. Then I noticed the race and bearing went bad on the trip,due to the retaining ring blocking the oil supply hole, no problem change seal 12052a, bearing 9135, and race 34091-06 and reassemble. All other seals dry. Test ride and leaks in 10 miles again. Ok maybe engine sprocket seal is leaking and pressurizing primary so change front seal and new primary seal and this time use dino primary oil instead of Amsoil 20-50. Ride 15 miles and still leaking. Any ideas Thanks