Down shift problem

[dangerous06]

Didn't find anything on this so here it is: If I go to full throttle the truck will accel and then downshift really sucks when this happens just decides to go down one and rev out the motor. It was going great pulling hard then this hiccup is there a fix or adjustment I am running a constant pressure valve body. This only happen at full throttle if I do 3/4 it's flawless!

 

[straight 6 roar]

Does it stretch out the gears at light pedal? Has it always done it or developed recently? Sounds like too short of TV cable but I think they switched to the servo motor for 06... I don't think most are familiar with the constant pressure valvebodies, probably going to have to call Goerend for this. (assuming that's the brand)

 

[dangerous06]

Yeah it's a Goerend I'll call them! It does have the servo so it is basically not needed anymore. Under light throttle it's perfect even 3/4 pedal it's just full pedal that it can't decide!