Hmmmmmmm. A lot of guys swear by those helper springs. I've read it over and over. The helper springs are supposed to be pretty darn good. They help the tire maintain grip under extension while going over bumps. And at compression, they'd basically be completely compressed acting as spring spacers. Maybe install them and see if you can get some extra height?Also...I'm running 6", 350lb springs in the rear with no helpers.
It would be easier and better all around to space the whole switch down with a couple washers if possible. You might have to alter the 3 attachment points a bit on the plastic switch body, but there's at least enough material down there to do it. The top of the plastic switch panel doesn't have very much in the way of thickness. The way I cut mine leaves like .05mm of space on the edges. lol! It's tight.BUILD RELATED CONTENT:
In all the madness I managed to wire and install my Revlimiter retro power window toggle switches. I need to modify the way the "skeleton" of the stock switches sits in the Nakamae console. The stock switches were flush. Since these attach to that skeleton, they are slightly raised up by an amount equal to the thickness of the aluminum plate Adam made for me. This wouldn't look bad, save for the fact that they sit inside a polished retaining plate. The step-up to the switchplate looks odd. It will be an easy fix with my dremel - which is still sitting on my workbench.
Also worth noting: I can't believe Adam is selling fully-assembled switches for as cheap as he is. These things are tedious to wire up and hacking up the old switch body is a major PITA. It's a lot of work.