I used to put them like this:
Right Arm: 2x CERLL
Left Arm: 3x CERML
Right mouse click: 2x CERLL
Left mouse click: 3x CERML
It works great for corner peaking, convergence, and flexibility but it suffers the most from blown arms.
Now I'm trying this configuration:

blue: CERLL, yellow: CERML
I want to maximize the loadout retention from blown arms but at the same time preserving the ability to corner peak as best as possible.
Right mouse click: right side (2x CERLL)
Left mouse click: left side (3x CERML)
Side mouse button 1: arms (1x CERLL and 1x CERML)
Side mouse button 2: side torsos (1x CERLL and 1x CERML), for ridge humping
As a bonus, I can now ridge hump better.
Please share yours!

Edited by Hit the Deck, 10 March 2015 - 04:29 AM.