Valve Lash Adjustment

Did your engine builder dyno your engine? Who broke-in the motor and was it down properly? Was the oil pressure brought up by prelubing (spinning up)the oil pump before the engine was started? Your hydraulic roller cam should be pretty maintenance free if all was done right by the engine builder ( on a high revving motor like yours 1/4 turn is enough preload for a good lifter) and the parts were matched correctly ( right springs, rocker arms, pushrods, lifters, etc.) Make sure you've got your rocker arm lock nuts locked down correctly.