Anyone experienced with Transgo Shift Kit TF2?

Without seeing it all (like you said) that sounds about right.
As long as you changed the springs as instructed.

ALV's way is for much firmer shifts (especially drilling the dam and leaving the ball out of the 2nd gear passage.)

We used to add half of another governor spring in with the original to get the shift timing up at high throttle.
(just screwed the half into the original and was simpler than grinding the gov valve, and could be changed or undone)

You never really know until you run it, and I have pulled a VB 5 times to get things where the person wanted it.
No matter what anyone says it's a trial and error thing unless you just settle for what you end up with.