I got it back so I could ski a bit before Christmas. I dropped it back off right after. So the remote start wasn't it, nor was the Crankshaft, vacuum leaks, fuel lines anywhere, etc. They put 10 hours of labor diagnosing stuff, thankfully only charging me for 4. his thought now is maybe valve lash on the camshafts. When reassembling they were a lot tighter than when I took them off. I attributed that to new tighter tolerances, but he said that bench measurements can look good, but when torqued down, the head can stretch a tiny bit and now you're at zero valve lash, which could lead to the stubborn struggling start. Based on feeling how snug they were to me, I don't disagree.

He wrote up a long list of things they ruled out. They were pulling their hair out and he said straight up if it's not the valve lash, then he has no idea.