Assami,
Reduce the 2-3 WOT MPH (and also set 3-2 WOT MPH to be below that) to say 50 MPH, and see if you get the shift;
if yes, then increment to 55 and test again (and continue to 60, 65);
if no, then reduce the 2-3 WOT RPM to 5000 and test again;
At all times: keep the 3-2 WOT MPH at least 5 MPH below the 2-3 WOT MPH.
I would also suggest setting all the Kickdown Throttle settings to 100%.