My 2002 Road King has been running great until recently. Whenever I get on the highway at speeds above 70 mph I lose power until I drop to around 65 then power comes back. This is getting to be 70 to 80 % of the time. There have been no changes to the bike in the last year. This is a stock bike with the exception of slip on pipes, larger breather and rejetting of the carb. Idle is fine and all speeds up to 70 run great. :small3d011: Any suggestions on where to start. Any and all help appreciated.