I am a motor head (cars, motorcycles, boats; anything mechanical).Machinist, Mechanic, Tool and Die Maker, Mechanical Engineer (2 Degrees). Rebuilt top end on my 1971 HLCH and oil pump. Set timing (oil pump and engine) to spec. by manual. PROBLEM: Blowing oil out of breather tube in time with stroke. Flywheel has two timing marks. Where did I go wrong? What do I do to correct. Thanks.