I have been adjusting my oil pump to oil the primary chain constantly. And still burning up my chains. I also changed out the 90° elbow on the vent pipe twice. Still no oil on the chain. So I disassembled the primary to find a burr where the face of the vent pipe seats against the case. Fuck. As always, something small, or easy. If it wasn't 28° outside I would start it and check it. I filed it smooth and put a gasket there so we'll see.