my tranny is driving me crazy,it drives fine in the city,but on the freeway it sucks,i hop on the freeway and when i hit 70-75mph,the car will not go any faster at WOT in Drive,then i shift OD and it takes a minute before the speed picks up finialy.is it rebuild time?i really don't have $12-$1500 for a rebuild.would a shift kit,new servo,or torque converter fix this problem?the car has 145,000 miles on her.Thanks