On Texas petitions, you have to have signitures from 2 Master Masons in the lodge you are petitioning, and then 3 more Master Masons from any lodge in the state. If you don't already know 2 Masons in the lodge, I would recommend contacting the Lodge Secretary and meet some of the guys from the lodge. I would talk with them, and try talking to the Secretary and Worshipful Master about your past. Being up front about it is the best way to put them at ease.