I have heard that also, about wrenching on them. I had a feeling that mine is one of the bad ones, but I really don't trust the local dealer working on my stuff, and the only one I do is 60 miles away. Actually I have heard that the new motor will be available for order in April. I do some liquid chroming for Bob Chandler and the Bigfoot guys, one of which is building some crazy 67 F100 for the SEMA show next year, and he told me that its gonna be a 6.4 with twins. Who knows? It cant be any worse than the turd outside in the shop lol....honestly, I wish Ford would make a deal with Cummins and put that dude in there...then they would have something.