Issue with kickdown using BPE cable kit

The 4.2 lever is good.

So your saying your losing all forward gears until you push the lever back? That isn't right. You are talking about the throttle pressure lever, right? Not the shift lever?

You need to get the throttle linkage issue worked out before you do the trans. throttle pressure cable adjustment. That could be part of your problem.

Shifting too quickly into the next gear is a common problem even when you have the cable adjusted right. IMO what's happening is shift kits raise the line pressure which in turn raises the governor pressure making it shift quicker. The only easy solution is to install a higher shift point governor.

What was the other issue you had to fix in the valve body?