Does anyone have any input re: the problems w/ the TWIN CAM timing set-up? I´ve been told they need replacement @ about 40k miles. I´ve also been told to just listen for undue rattle. It´s an H-D... it´s job is to unduly rattle. Besides, I´m a carpenter...54 years old...I´m lucky to hear the alarm go off in the morning; I´m about deaf. Any input would be appreciated. Thanks. Dan