Have you tried to ask the LBSs? The shops that are older and/or focus more on service might be better then those who drink the current corporate Kool Aid.
https://www.velocipedesalon.com/foru...ors-43632.html Here's another forum's list of framebuilder "mentors" to try contacting. I believe at least a couple are in TX.
A few of us have made rather specialized tools for stay denting. A general metal fabricator might understand the issues but doubtfully have tooling. Andy