I know that there are issues with the '07 valve cover gasket. There has been a recall on the matter. I'm on my third valve cover gasket for my '05 636. I never over-fill my oil, I use the recommended oil filter (not a larger one), my bike doesn't run any hotter than any other 6r's I know, and both times its been replaced it was at the dealership. A very good dealership at that. Does anybody else have this issue? Any ideas?