Fishy68 on my TF-2 instructions is the copyright date 2011.
After reading about the 2-3 overlap and how the band and front clutch should disengage simultaneously. So if you have 2-3 overlap issues, install the orifice plug to time the 2-3 overlap event. You can drill the hole larger in the orifice plug to get the front clutch apply faster and tailor the 2-3 shift.