Has anyone had trouble with a leak at the block and also at the bolt head, I have used the gaskets that come in a complete gasket kit and have had the adapter on and off about 4 times with no luck getting it the stop dripping oil, have used grey permatex, have used nothing but the gaskets no luck either way, where can I find gaskets that will seal ? (have also tried a different adapter-same results, they were both cast iron adapters)