So "yesterday" finally came and I played around with the truck...
I undid the kickdown linkage and tied it forward.
Went for a drive and it shifted GREAT!
2nd to 3rd happened repeatedly at 46 mph!
The shifts were firm (nice) but both 1st to 2nd and 2nd to 3rd happened at what seemed like "normal" speeds.
So now, to I reconnect the kickdown and keep drilling holes in it to shorten its travel???

Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
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68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)