to day me and my wife and a couple of friends went on a short ride around town mainly highway some trusties but right before we pulled up to there house i popped the throttle as i pulled in the clutch and the bike backfire into the air box. i parked and we all talked for about on hour and then me and the wife made a little loop down the avenue and i noticed valve clatter. I'm running premium fuel and i wasn't in to high a gear as bog it down. i don't know if i should be worried or not the bike has just over 100 miles on it now, and this is the first new bike Ive owned. is the 1900 just a noisy motor? the 650 v-star wasn't. i bought the 5 year warranty with the bike so I'm gonna keep riding it just wonder if i should call the dealer or is this normal break in stuff? ???