Another update - it got real cold last night - startup fuel enrichment was set back to near factory settings (E85 and TGV deletes)
Car started on the first crank and had absolutely NO idle hunt. It never ever ever even considered doing this before even with fuel mixtures as rich as 11-1 at startup.
I have successfully leaned it out to almost 16-1 in closed loop with very smooth consistent results.
Going to start leaning out high loads as I feel more comfortable doing that now...
-Jerod