I just bought an 06 750, my first motorcycle and I'm trying to learn as much as I can about it and this site has been extremely helpfull. I'm getting ready to change the final gear case oil ( I have about 350 miles on it). My question is, the service manual says that after you drain the oil, install the drain plug with a new aluminum gasket. Is this necessary? I'm not sure what the point would be in this unless you damage it by taking it off. If I do need to change it do I just contact my Kawasaki dealer?