I just recently went from 31s to 33s. in city and off road all was cool but today was the first day i had taken it on the highway to work. It is and 05 TJ Sport, Automatic. I throw o/d off untill i hit about 60-65 mph and then it usually hits around 2100 rpm's, although today it ran high,3100 rpm's, the throttle also increases slowly until a certain point to where it jumps real high. would someone please explain?