Holley/Demon Carb stumble

I when from 8.10- 8.20 and 95 96 mph
To a best of 7.78 1.5 mph faster and 200 less rpm at the 1/8 finish line.
I am not unhappy with my TQ....just my Demon carb that keep complaining.:D

It" not that the TQ is to tight, it's that the Demon is just to big, so big that i can't over come it with the combo i have.
Still plan on a ET Slip or two on this Demon carb before i pull it off. As well as some Gopro/ o2 run readings.
Then put the Proform back on and do the same test.