For those interested in the tune-up, open the attached file showing my wide band oxygen sensor data (LM-1). The black trace is the engine rpm, and the purple trace is the air/fuel ratio (set on the gasoline scale). It was pretty flat at 12.3 A/F, corrected to actual mixture for E-85 would be:

Stoichiometric ratio:
Gasoline 14.7
Ethanol 9.00
E-85 9.76

Lambda = 12.3/14.7 = 0.836
A/F act = 0.836 x 9.76 = 8.17