DixieDog,
I had tried that neutral adjustment. Lift rear end, remove HST rod from arm, H range, full throttle, 2wd, and adjust neutral hex bolt/with 17mm lock nut. But was unsure of the results, so just to make sure, had the dealer verify. We had adjusted it 1/4 turn CC from original. When it went to the dealer, his report was it was 'way off'. Didn't verify what that meant but it works now, so his fix was good and worth the effort.
But like I said previous, the other adjustments were equally important.
The RTV has a quirky little transmission setup and requires adjustment when it is not working. Once setup, big difference. Well worth the time and effort.
If you need my explanation on how to adjust the HST arm, let me know.
Since making these adjustments, most times I DO need to use the brake pedal to release pressure, lots of time I don't, and I have not had to use the dash pressure release knob once.