I hate to ask what may amount to a dumb question, but wanted to see if anyone has seen this. I've been slowly, but surely, replacing shocks and springs on my 900 SE NG. I pulled the rear shocks off yesterday and saw where they had been replaced before. Whoever replaced them put a black gooey sealant or gasket material underneath the bushing in the trunk. Has anyone seen that before? Is that for water spray from the tires? Or squeaking? Should I repeat and add something there myself when I put in the new ones?