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

FB cuda you have some great thoughts but I have tryed both gaskets as well as doubling up with two wagon wheel gaskets, having better temporary leak stoppage with double wagon wheels. As far as the block and adaptor goes they are stock from a 1966 formula S numbers matching motor. I have struggled to upload photos to this site so that's why no photos. All surfaces are for sure clean and dry especially after 7 trys I know they are clean. Someone mentioned a copper gasket under the bolt head, that might be a good try to give constant pressure on the housing adaptor maybe better than a fiber washer to keep constant pressure on the block to adaptor gasket once the bolt is tightened. Also Mancini racing have a bolt and gasket package and they say the bolt is stronger than stock so that may be worth a try, but you can only tighten a hollow bolt so tight or you could wreck threads somewhere and the worst place would be at the block, that would be the end. The inner mancini gasket for the bolt looks to be nylon instead of cork and doesn't look as thick as the cork so not sure about that but I'am running out of ideas. Anyway a leak is a leak no matter where its coming from and there are only so many combinations of gaskets and sealents that can be used. I think the adaptor could have a crack or warped somehow even though it is cast iron and I would think hard to warp with that hollow bolt tightened to just over snug. I think the only idea is to try a different adaptor, maybe the Mancini gaskets and bolt but everything has to work together or of course something could leak and as said a leak is a leak and unacceptable no matter where its coming from bolt or motor it just seems one will leak more in my case. The one at the motor.