I pulled the right side case cover off of my bike to replace the gasket as the bike has been leaking oil were the case cover bolts to the case. Do any of you guys recommend using any additional sealant in this area along with a new OEM gasket? Can I clean the old gasket residue off with brake parts cleaner? Also what type of adhesive should I use to secure a helicoil I installed in the drain bolt hole for the oil filter? Thanks.