i had a s&s gear drive kit with 510 cams and new lifters with adjustable pushrods installed on my 2004 roadking flhr.ran fine but when it got hot it sounded like it had a bad lifter or two. it sounded loud and terrible.rode it 2 hours straight one time and it sounded like the motor was coming apart.had a hd mechanic look at it had .002 run out he said was ok.replaced the pinion gear to the next bigger and adjusted pushrods again.ran great no noise. got about 2000 miles and noise is back .sounds again like a lifter and only when its hot.seems worse for some reason when ol lady is on the back.it seems like it has a hollow noise coming from the nose cone area. any suggestions?