Drag Radial Tire Pressure

So the car is a high 14 second car. Runs 2.19 60’ spinning? Is this a new combo or just a tire change? You can get in the ball park by looking at the tire marks after spinning the tires. You want an even color all the way across. Light in the middle add 2 lbs. light on the edges take out 2 lbs. when it is even you are close enough to play with it at the track. I assume it’s an auto, try loading the converter. I know its counterintuitive, but I have found that leaving at idle allows my converter to flash to high and knocks the tire off. By loading it it goes up to stall speed not really up to the flash rpm until I’m farther down track.