Return spring setup for 4500 dominators?

I'm looking to get a return spring set up for twin 4500s.
All I see is this.

Quick Fuel 49-3QFT Throttle Return Spring Kit For Square Flange 4 BBL Carburetors

Im afraid it will be in the way of the bell cranks for the twin carbs.

Anyone used this on twin 4500s?

I would like 2 springs per carb as I do not want this SOB sticking wide open and once I pass over the acellerator pump cams things get a little sticky..

Thanks for all the help.