2000 4.0 automatic with the 32RH transmission, trans was rebuilt a month ago and the shift from 1st to 2nd is still really rough. I can see the RPMs revving up and it gets really hard to goes forward then it just jumps into the second gear and goes fine from there. Not sure if I just should take it back to the shop under warranty or if there is an easy fix for this. Any help is appreciated.