Can I shim the harmonic balancer

What's wrong is I purchased an ATI damper and the guy on the other end of the phone failed to read me the small print. The edge of the damper is in contact with timing tab so I can either grind it down or shim the damper out. Were only talking 1/16" to clear the tab but need to account for gasket as well of which am waiting for delivery. If I shim out 1/8" my pulley issue with water pump would be corrected.