hi guys trans has just been rebuilt and under soft acceleration it shifts soft from 2-3 and 3-4 and seems to drag it's self out and if you start to accelerate a bit more when its in this way it acts like it didnt lock in to 3rd or 4th i had a shift kit in as well, if i start off under a regular acceleration it shifts great. Any ideas? low fluid pressurefor 3/4 ***** ? or maybe that electronic kick down throttle sender?

 

One of the things these trucks are noted for is the governor solenoid
going bad, it controls the pressure.

 

and if thats been replaced ?