Burn out issues

How can I stop my car from fishtailing to the right every time I do my burnout? It has happened on every Mopar I have raced, which is 4, 68 Roadrunner, 71 Dart 360, 73 Duster 360 and now my Calvert Caltrac rear suspension 66 Valiant. Can't download videos.....sorry low tech....wtf. Line locks and front disc on all these cars.
Years ago we had a problem like this on a rear engine rail. It was adjusted out with using unequal tire pressures. Dont know if this will help , just spit balling.
Good luck