I have never had this much trouble buffing this stuff out! Also, there is brown spots being transfered onto my MF towel. My car must be pretty drity, although it doesn't look it. My car has sat out in the winter (for the first time). Is this why the 3MIHG is difficult to buff out? Is there something else I should try. I have some Megs #9, should I try that? Also the 3MIHG is over a year old - does that have anything to do with it?