After machine shop has had my heads for a few wees he calls me today saying hes having trouble finding factory type 2.02 intake and 1.60 exhaust valves. They are out of stock on a bunch of sites I'vre tried so far. So what are you all doing as an alternative or am I looking in the wrong place. I would like to keep the 4 ring retainer slots if at all possible. Should I put a wanted add here and/or should I try to find NOS somewhere?