Convert to replaceable idle air bleeds?
Deep Roots also says to make them the same. Taking it apart again today (actually not a big deal when you have the blue nonstick gaskets, just a few screws).
I may have to have the secondaries opened quite far to maintain my high rpm/low vacuum idle (remember with the 2-corner I was just starting into the secondary t-slot AND had four 3/32" holes in the butterflies). I've drilled a 1/4" hole straight through from the carb stud, and now plan to make a hollow adapter for the top side where the bypass air can get in.
Will see how it goes :)