Also, rv7, 360, precision vertical fi servo. Doing FAB work now. I'd say I have mine over as much as one can go and still have good edge distance on the bolt holes. I didn't measure yet, but I'm probably around 1/2" as well.
Are you posting good pics anywhere?
And the mixture arm.. I have the reverse (upward) mixture arm that seems more common now, which doesn't require the FAB mod. In full rich position, however, it comes within 1/4-3/8" of the cowl. Some folks have done welding tricks on the mixture arm. I ain't trusting my welding to something that can shut off an engine. I contacted Precision. They'll have other arm options available, I just don't know which one to ask for yet...
From Peter Neilson at Precision Airmotive
"We have arms offset
about 1" or straight and either 2" or 1.625 or 1.38 center to center."