Along with the more then likely valve float, recheck your lash. You should set it spin the motor over a couple of times and recheck it to be sure it's where it needs to be. If memory serves, and check on this, you go slightly past TDC to set the valves on the Hemi. And from what I understand these engines will actually open up the lash as they get hot.
I'm using the 22's on my Hemi, billet rod/flywheel, no governor, I went with the Mod 2 cam, (it works for me, I know, I know) bigger jets, (yes you have two) emulsion tube, filter and header. Seems to love it, runs like a scalded dog. And the plug looks great.
Going similar on my non Hemi, minus the cam.
I'm using the 22's on my Hemi, billet rod/flywheel, no governor, I went with the Mod 2 cam, (it works for me, I know, I know) bigger jets, (yes you have two) emulsion tube, filter and header. Seems to love it, runs like a scalded dog. And the plug looks great.
Going similar on my non Hemi, minus the cam.