So the new head arrives from Belgium that is covered under warranty for the one head I have that had a gaping hole in it. Well, the same "quality control" standards were applied to the "new" head when it arrived with a USED intake valve. This is the second time UL Power has sent me used parts under warranty. I honestly don't understand a company that operates this way, but I told Ray that if it makes compression then I don't care. The valve itself has an even heat signature so good luck to me! I'm even tempted to leave the one I have on the airplane unless it starts leaking. What a joke.