Ive got about 5100KMs (over 3000 Miles) on my suncoast stage V and its starting to get me angry, no matter what tune i run it on, always 3-4 is SO hard. Double hits and lately every WOT run when shifting from 3-4 it has like a 3-4 second pause(my cummins used to do this when it was slipping) then it hits 4th HARD like enough to give whiplash, its not getting any better at all and for the money i paid for this trans im starting to regret it. Any info would be much appreciated. :hug: