I have a 125" rigid car and i understand your frustration.After you get the left and right problem figured out the traction issue will change from track to track. Tire selection will make a change. Stiff / soft sidewall, rubber compound choice. Also if you run a torque converter, using a low rpm chip will flash the converter harder.Without a chip the engine will get up on the stall. The object is to get the car up on the tire. My problem was an issue with the wheelie bar flexing.My car would try to steer out of the groove at the launch. If you can get someone to video the launch from behind it helps. I would contact your tire company to see what tire they would have you use.