I am looking at your sig. Did you get a 13.6 1/4 mile or are you basing that on your 1/4 mile times? A 2.1 60' is respecatable. Improving 60' times is mostly practice. My first time at a decent track, I was cutting 2.3 to 2.5 60' times because of wheel spin and wheel hop. My 60' times are now anywhere from 1.8 to 2.2