200-4r problem

[Jake's Performance]

Even with a stock setup there is usually some allowance for adjustment.

Look at the Bowtie Overdrives site's explanation for the TV system function.
Specifically look at the LSS or Long Spring Syndrome.
They are building this into their TV system.
It is also usually already built into the factory transmission just at a lesser extent.

The TV plunger spring is slightly longer than it needs to be, so that when you adjust it to the "GM recommended" method you just linked to, 95% of the time it will be a bit too tight and the part throttle shifts will be late and hard.

This is a good thing, one because it allows some adjustment, and two because it allows for spring fatigue.

You adjust to the GM method for initial test drive.
Ideally you have a pressure guage attached.

You then drive it and adjust it for proper shifting. Typically you will need to back it out a couple of clicks or around 1/8th inch.

The most critical thing is to see instant pressure rise on the gauge from idle. As long as you don't loosen it up to the point you don't have instant pressure rise off idle, it will be OK.