Just a little tidbit...... and you may already be aware of this.......
But the fuel level setting on those demons isn’t like the old holleys(bottom of the hole). I usually run those with the fuel sitting about 2/3 up the sight glass, set with the engine running.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads