My rear oil pan drain plug got stripped the other day. Not the plug, the drain hole. When I dropped the pan, it appears that someone has been in here before. I'm the second owner. There were no crush washers on the plugs, most of the small washers on the 14 retaining screws were missing, and there were a few places on the rim that looked like a gasket sealant had been used before. Most of the edges were completely clean though. My question is - do I use a gasket and/or sealant around the bottom of the pan? I always use a cork gasket and sealant when I drop my oil pan on the car or truck. Is it the same with this bike? Appreciate any help. Thanks.