I've heard that he once tore up someones lawn with his Jeep. I think it was for wasting his time and they probably traded insults too, but he is scum. I'm not sure I've heard a positive thing from anyone about him.
I heard this about 3 weeks ago from a special bluebird. He also told me that if you make money from repairs or go around doing services, TG's going to force you to make you get an LLC and pay taxes or TG will report you if don't.
Also, if for some ungodly reason you decide to do business with him:
1. Have the money, all of it.
2. Don't try to talk him down in price. He will insult you and be unreasonable
3. Don't waste his time
4. Why are you doing business with him?