Just about have my unstyled AR together again. However, I have water in the system to check for leaks and have one that is a bit frustrating. It is from the main water pipe (2" plus diameter) that threads into the head. I removed it once, cleaned the threads, put on more pipe thread sealant (I was generous this time), and reinstalled. The leak has slowed, but overnight it still has a very slow drip (perhaps less than half a teaspoon overnight). Any sugggestions for a better way to seal the threads. Currently using Masters Pro-Dope with Teflon Pipe Thread Sealant (liguid by Dupont).