Tuning Street Demon carb

Mopa,
What you describe in post #17 about going rich with less than full throttle is I believe a 'quirk'
with air valve style carbs. Part throttle, not enough air flow to open the AV, so AV acts like a choke & causes a rich mixture.
Carter foresaw this as a problem with the production TQ carbs & added a vacuum bleed arrangement to allow the AV to open slightly & lean the mixture. The Comp Series TQ did not have this. It could be that on a competition carb, it would be at WOT or it was added later on production models.