I replaced my stock turbo oil return when I bought my car because it was leaking really bad. I opted to replace it with an aftermarket one that had swivel AN fittings. I keep getting oil leaks where it meets the block and it keeps getting worse under boost. I have pulled it off a few times now to redo the plumbers tape. Does anyone have any suggestions for something that worked better for them other than plumbers tape? I took some photos and I don't see a crack or fractures in the block.