Has anyone ever experienced a squeaking sound coming out of their exhaust? I recently fired my bike up after a year long slumber along with some modifications. I changed from factory exhaust to Mikes single wall head pipes and custom Cone Engineering mufflers and am now noticing what sounds like a squeak coming from the right muffler. Everything is bolted tight, and nothing in the motor has been touched other than the carbs. Could this be from valves out of adjustment? or possibly lack of oil in the rocker? I have never heard suck a squeak before from the exhaust and it is only coming out the right side muffler. Is this something i need to be concerned over? I attached a couple of videos that you can faintly here what I am talking about.