Hi guys, here are the codes I have popping up P2564/p2565/P064. I just completed my headgaskets, put around 1000 miles on it, then had to pull driver side valve cover due it hitting the rear ARP headstud. I have a CTS monitor and noticed when I clear the codes the idle changes (turbo vanes?) and they go away and then come back.Vane position at idle is 80% varying to 34. any ideas?