Roller rocker hitting aluminum head???

IQ52 said
There is always going to be some adjustments/modifications that need to be made because of tolerance issues.
I keep saying, "You have got to be smarter than your cylinder heads." You have already discovered the problem and thought of an excellent solution. Said solution has been seconded below.

Now will come other suggestions, as always happens, beyond what you have asked. If all you want is for that rocker to clear, you already have your answer.

Agreed. If this was a prostock motor I guess I would be a bit more picky. This is a street motor that won't see over 6,000rpm ever. I don't think the geometry is going to make or break this motor. I bet you would be hard pressed to find a factory Chrysler motor that had perfect valve train geometry and they ran just fine.