I have recently fired my rebuilt 350 running a Hydraulic Comp XE 268 cam. I have Vortec heads with stock self aligning rocker arms. I have heard that the XE cams make a lot of valve train noise. My question is how do I determine how much noise is acceptable? When assembling the motor I set the valves twice just to make sure I had them right. The engine has less than an hour of run time on it but their sure is a noticeable amount of noise. My neighbor stopped by and asked my if I was running solid lifters (which is does make that type of sound). I will probably go through and set them again just to make sure since I am a little paranoid of them not being set right. What do you guys think?