Can I shim the harmonic balancer

This is the path I am trying to take. I agree with you. Will not take too much grinding for tab to clear. Just hate to do it to a nice timing chain cover. Mancini has .125 pulley shim. I'm piece milling this thing together. On obstacle after another. Think I will rob alternator of /6 to test alternator alignment.
Why not get the correct balancer and sell the one that is incorrect for your combination?