I purchased the 750 Commando about 2 years ago and have not been able to ride it because of an oil leak. I have solved my oil leak but the engine seams to make a great deal of noise at idle. When I started it today and let it idle it sounds very different than what I am use too (Honda CB350, Kawasaki 4 cylinder). At first I thought the valve clearance was out of spec, I checked it and adjusted one exhaust valve but the noise persisted. Can anyone suggest/recommend a repair shop in the Metro Detroit area that can evaluate my problem? Your thoughts and suggestions are appreciated.