As stated above, I made tiny adjustments until I got to my happy point. 1st to 2nd @ ~16-17mph, and 2nd to 3rd @ ~33-34 mph. 2- days of "tinkering" but I think it's good now.
The "seat of the pants" dyno tells me with the upgrades (LD4B, 1406, timing chain/gears, water pump, fuel filter...