I just bought my 2007 SuperGlide with 2200 miles on it....it now has 2700. Anyway, I bought a new derby cover and when I was changing it I noticed a peculiar smell from the primary. It smelled like burnt brake pads or clutch plates? Is this normal? Should I just go ahead and change the primary oil? The clutch seems fine and there are no problems.......I'm just curious as to this smell.