I just got the cam reground by crower. The cam card says set the lash to .18 intake and exhaust. I did that and they still sound kinda loud when it heats up. I just drove the car like 6 blocks on the slow hill in front of my house. The motor also has lash caps on it to correct the roller rocker/valve tip geometry. Could that be making the extra noise? I'm thinking I should adjust the valves tighter but how tight?