When my 04 speedmaster is at hwy speed. When I open up the throttle I hear a rattle. It makes the rattle only when I open the throttle goes away when I back off of throttle. No noise at slower speeds or at idle. I have looked for any loose points and have found nothing. Could it be in the carbs? If so what could be loose. I have 22,000 miles on bike have inspected the chain and sprokets ,do not have much wear on either. This has only started this spring not sure where to go so any help would be appreciated.
Thanks
