With heavy throttle the shifting is extremely smooth. No hard shifts. Let it go 1-2 again then ran 69.25% throttle. At lower speeds/throttle it's starting to level out after more in town driving with stop/go and gear changes in traffic.

The section of road I use where I know distance because of a small bump. Previously I'd get up to 57-61mph and really be on the pedal
Now at the 69.25% this evening I hit 73mph in the same distance.

Just in case anyone doesn't know

2009 mega cab 2500
68RFE 4x4
34.4x12.4 on stock 17's
3.73's