ok so i bought a art carr 47re for a 98 dodge 12 v. i instaled it about two weeks ago and right off the bat under wot it would not up shift moastly from 2nd to 3rd. i callet art carr and they said they would build and ship me a new valve body whitch still hasent ben bilt or shiped last i new. now today while leaveing work it would slam in and out of gear in first whitch it has ben doing for about a week. when i first try to take off in the mornings and when i leave work so on the drive home it wouldshift fine up to od then drop in to netural then when it would pick back up it would be in 2nd and over rev it also would leave me coasting for long peroids of time after bumping the throdel and slowing down to about 20 it would pick first back up. i am so pist off about this please help

 

Is it possible the throttle linkage is mal adjusted or binding up for some reason?
Could the shift linkage be floping around. Bushing on crossover shsft is prone to issues.
From your description, you need to call MR. CARR and get another tranny. Suspect that one has smoked clutches now.
Unless you fobarred the linkage, the problem was/is inside of tranny.