Degreeing a Cam, or not.....

You have a mech lifter cam. You can use that feature to see if the cam might benefit from advancing or retarding it.
Unless the engine build is an EXACT copy of another where all the same parts were used & the engine dynoed with the cam position changed until max hp was obtained, then it is just guess work as to what the correct cam position is.

I would try decreasing the lash by 0.004" & retesting. This closes the int valve later. If the performance improves, you should try retarding the cam. If the performance decreases, try advancing the cam.

Crane cams advises that if changing cam position, less than a 4* change & the butt-meter will not notice it.