Bottom line, NONE of the engine with reworked heads have dropped a valve......none that I've read about anyway. Katech did my build, and they use wcch. Which valves did you go with.
thats the thing, we are now on to GM's fault and we wont see many exhaust valves drop because guys are checking the clearance more. Im using ferra......Katech is the way to go, I wish I had the coin and chance to do this again, thats the route I would go.