I'm rebuilding a h22a right now. I put the oil pump lined up on the timing mark with a pin in the balance shaft through the side. I just used assembly lube around the gears and sealed the o ring with ultra black. I was reading in my book that moly grease should be used.

Would it be ok to leave it as is or tear it back off to put in a little moly grease?

 

Assembly lube is just fine, rotors will got pre-lubrication and it is thick enough to help for faster priming in first start. New Honda oil pumps just have a coat of thick oil in rotors. I recently build up B series oil pump with Toda’s rotors, and used Red Line assembly lube with that.