I'm glad for you grandpaul that you havn't experienced the most ancient and accepted and expected engine failure mode, ie: all seems fine- tii ~ o.19034 sec. of tickling sound sense of parts chewing to pump or draim passage swallowing sizes, then ~.003 sec later the brain begings to registers the sound and .05 sec. after that brain resisters the after effects till tire squealing tire stops or the sliding bouncing of bike and pilot do. On the other hand we have cases like comnoz with piston detonation damage noisey 1000's of miles away from home and almost back that his wisdom to provide oil pump screen saved its specialness.