Good to hear. From what has been said about them, they are pretty darned good heads, especially for what we paid for them. I got lazy and thought I might sell mine and make a hundred or so. No I don't think I will. I bought 2 sets of roller rockers, sold a set to a close friend and he will use those on his stroker. Those will need some modifications to work with the springs on the heads. Depending on what cam I run in whatever I put the heads on, I might not need those springs anyway. I might go with smaller diameter ones or even beehive springs so the interference issues won't be a factor. I'm not going to start grinding on stuff until I have a plan.