Holley 1920 Rebuild Help

I figured out what was wrong. And sorry about missing the picture that ACTUALLY shows what was wrong. The spring that shuts the bowl vent closed wasn't tensioned. I just wrapped it around the rod and it worked fine. However, I drove it up the turnpike after adjusting it and it had no power, I couldn't get her past 70! and went through a tank of gas after the 90 +/- hike from South Jersey to NYC. I dunno what's going on. I adjusted the float using the little cardboard thing that came with the kit and from what I can tell did everything else right, although I still need to get a tachometer to adjust the idle and hook it up to a vacuum gauge to set the idle mixture, I just did it best I could by ear and kept with the "2 turns out" technique that's called out in my Chilton's manual for the idle mixture screw. Not sure if that would cause my problems or not.

Any suggestions?