I seem to have a bit of oil seepage from my oil filter housing (1st generation). It seems to be coming from around the large O-ring that seals the oil filter housing 'cup' to the block....the center bolt area O-ring area is dry. I've just installed a new O-rings again and after about 100 km it seems to want to start seeping again. It seems to be very minimal seepage....not even leaving drops on the floor. Any thoughts on me getting a tight seal on this (without me going to the spin on filter adapter)??? Thanks!