Only a 6.40 first trip out sucks!

Took the dart to the local 1/8 and the fastest pass was the first. I turned the transbrake down to 3400. and I had put a new shifter in with the trans button on it and the car left okay but I accidently pulled it into second not far out and ran a 6.40 @121. The next passes i had a short in the trans brake and the other one where the brake held i blew the tires off. I was wanting to run in the 5's so bad. Maybe next time. I need to get new rear springs I can put all my weight on the trunk and the car does not move at all way to stiff.