I have changed a head gasket on a td42 and now have some oil leaking down the side of the block. Mostly leaking on the exhaust side. I used a ACL head gasket and torqued it down to specs in 2 stages as recomended. Any ideas as to why this would/could be leaking oil? I have done a compression test and everything seems spot on there and seems to be running great apart from the leaks. Do these need to be re-torqued once hot or somthing? Any suggestiuons would be greatly appreciated. Thanks