Jetting predator 500

I bought my predator with aftermarket air filter, hmu sport exhaust, dynojet kit (I’m not sure on which of the jets or air/fuel settings), and also a seized piston. I installed the wiseco 104.83mm hi comp piston and did not rejet and put atleast 30 hours on it. After blowing a head gasket I had my head trail ported and now it only idles for 20 secs and die. I wanted to know should I rejet and if so what should I be running, I live in Houston?