Oil filter housing leaking, can't get it to stop SB 273

Just remember that always what appears is not necessarilly the problem! Alloy rocker covers can leak and the oil runs down the back and drips off the filter area. I has a persistent leak that I thought was from the filter area but after pulling the engine out I could see a crack at the oil pressure switch hole. The pressure switch has a tapered thread and if over tightened it will crack that area and the oil will run down the back and appear to be comming from the oil filter area. I slightly ground the crack and JB welded it and it hasn't leaked since!