Hello, My new bike has 500 miles on it and I have had a loud tappet sound (valves) occurring most noisily between 2100 and 2300 RPM. I finally got tired of this ball ping hammer symphony so I went to a local dealer. They said leave the bike and we'll begin to tear down the engine to find the noise. A second dealer said the same thing, neither had test ridden the bike. Finally a third dealer said that they have seen (heard) this with other new Screaming Eagle 100 motors. They claim the problem is that the new bilkes use Harley s Synthetic 3 motor oil. They said the engine is fine, just to change all oils to a non synthetic thicker oil and the sound will go away. Okay I am skeptical but I remember reading another post where they used a heavier weight oil in the trans and it helped. Where can I turn for advise, any comments out there???