Good news is you got what you paid for. Im sure there are good reputable gunsmiths in Miami area the same as any other area of the country. Finding them might be a different story. I would probably send it back to the Smith who had it before and let him figure it out. A TIG and someone who is good with a file can do wonders.
Concentrated power is not rendered harmless by the good intentions of those who create it.
"If you find yourself in a fair fight,,,
Your tactics suck"- Unknown