Ok thanks for the slips. I used the 12.81 @ 109.02 for the DA and split comparison. Unfortunately at 9:45pm your DA was corrected to 1445'. Which is fantastic, only about 50' better than your other run. Before getting into detail of your splits, you ran at two different tracks with very similiar corrected DA. Quaker City Raceway will be the faster track for sure, depending on track prep. In the 12's with Mickey's tire slip is non existent. Your run corrected came to 12.751 @ 109.549. So you actually slowed down.
To understand your split times each with a negative is where you actually gained from your previous best run, the positives are where you slowed.

Splits 60' -.0151, 330' -.007, 1/8' + .0042, 1000' - .0403 1/4 mile + .0491
So you gained all the way to the 1/8th slowed there then gained at the 1000' then slowed at the quarter. I have to guess at the 1000' you were in 3rd shifting to 4th. I'm still waiting for a converter of .csv to .zto files so I can see your charts a little better. From your times it appears your car is letting up and then getting back in it. Possibly timing being pulled by your ecu? I don't see you spinning tires at that speed especially with drag radials. That's not possible and your not spinning off the line either. Another possible scenario is belt slip, maybe the pulley can't handle the extra power. Crank pullies don't slip much if any at all, so we don't even factor that in. My power is mid to top end and with that DA I'd be mid 11.8's. I would check the belt slip first. Good luck. BTW Quaker City is 955' above sea level and has a compulink system which is one of the most accurate timing systems around. Not sure what Thompson has.