Dave,
Did you have wheelspin at the launch? one tenth lost in the 60' time is like .2 or .3 lost at the end of the track. Also, what was your shift technique? Slow shifts cost time but not necessarily a lot of speed. .7 of a second is like a car lenghth, maybe less. I've busted plenty of 15.5's and higher...usually due to a poor launch or crummy shift...that 15.07 was magic...I still don't know if I can repeat it or not.
