Yukon A-Body Axles / C-Body Brakes

I have scrolled through the archives and find several references to the modifications that must be done to adapt the A-Body E-Brake cable to the C-Body 11" E-Brake mechanism when swapping to the Yukon axles, but none that CLEARLY define (at least enough for me to visualize - maybe I'm missing something...) what it is that doesn't fit correctly and must be "massaged". Can someone that is intimately familiar with this operation please quickly outline for me what is required here? I'm going junkyarding tomorrow (I did the recon today and located 2 sets of C-Body 11" brakes) and unless I get some quick resolution to this query I'm just zeroing in on a 10" x 2.5" set-up instead. Any help will be appreciated.

Ray