I've read through as many threads as I could locate and can't seem to find an answer. I have an 07 King Pin Tour, had 600 miles on it, it now has 37,000. Last summer I heard a "new" sound, more like a "roar" than a click or clack....and not exactly sure where it is coming from, other than it sounds like the rear rather than the front of the bike. It also does not "sound off" until it is good and warm. It does not seem to affect performance. I do pull a Kwik Kamp, probably half of those miles, except that last year I did not pull the trailer at all. My dear husband drained all the oils and has attempted to check things out. Unfortunately I am not able to be more specific with the exact type of noise or the location in order to help him out. The nearest dealer is 100 miles and I'm hoping not to have to take it down there. Any thoughts or suggestions are greatly appreciated.