Wait until you hear one after its been on the road for 400 miles or so. On the last day of drag week 12 mine sounded so bad when i got into town I didn't shut it off while my co pilot ran in to grab us a "made it back to tulsa" pack of beer. It sounded like a Duramax lol. The next morning it lashed fine and sounded OK. I guess there is alot of expansion after its been running all the way from Memphis @3800rpm This was a solid roller, I think I am going to lash it quite a bit tighter this year.