Here is the link I had saved.
Another 1405 vs 1406 thread
Here are the combos that I've tried so far and the rough A/F readings each.
Stock 98-75/47 A/F 14.0-14.5 WOT A/F 12.5-13.0
98-73/47 A/F 13.3-13.8 WOT A/F 12.0-12.5
98-71/47 A/F 12.7-13.0 WOT A/F 11.2-11.7
101-73/47 A/F 11.0-11.7 WOT A/F 10.0-10.3
92-68/42 A/F 14.0-14.5 WOT A/F 12.5-13.0
Now all the combos above (with the exception of the 101-73/47) started to lean out the second I stepped on the throttle. The richer the combo in the cruise circuit the less it leaned out. The other odd thing is with the first 3 tries, even though the power side stayed the same size, it got richer.