[DesertMK4]

Now I have a Holley 670CFM with vac secondary. I see two things in your picture: no secondary idle mixture screw (the small lower hole on the base of the secondary float bowl). There is also one on the other side (4 all together) I had to use a spacer (1 inch) below carb to clear both sides linkage. How much play in throttle cable? If too much the hard cable housing will jump out of the fitting of the cable bracket, or at least catch on it when decelerating quickly. I attach 3 photos of mine. Hope this helps.