After changing my oil for the second time, when I fired my bike up I noticed a funny noise. After pulling the clutch in, it stopped. Of course when I released the lever, it starting making the noise again. It just sounded loud. I had put in 10W 40 oil instead of 20W 40 oil. Would that make that much of a difference? I just finished draining the oil and changing the filter and I will pick up some new oil tomorrow. Any suggestions on what oil you guys are running? Or could my clutch be going bad already with about 10 hours on my bike?