The launch is a killer. I had a hard time finding a happy place for it to launch at. I even tried 2nd gear, but it doesnt have enough torque or that.
Totally missed this. You're definitely experiencing some power delivery issues. From my experience with a 3 liter, 1st gear was almost unusable with power delivery. I was constantly spinning or wheel hopping in 1st. I remember using 2nd gear to pull off from a stop when there was any sort of precipitation. If 2nd gear isn't giving you enough torque to get a good launch you're definitely not getting enough power somewhere. That plus the shifting issues as everyone's mentioned would definitely account for you not being in the mid-14's.