I was out riding yesterday and my 07 RK with 103" was running real rough. I could smell gas fumes every once in awhile. I pulled over and noticed my exhaust tips were extremely black with soot. Im running a power commander and rienhart td's. I checked my plugs and they seem to be fine. It was raining pretty hard for awhile and ive got an open element Arlen Ness air cleaner so maybe it was sucking water. My exhaust didnt seem as loud either but it doesnt look like my header pipes are loose. Any way to check for leaks ,like with soap bubbles or something? Any one got any thoughts about whats going on. Thanks.