If you are going with the V4 Defender all-polymer plate, don't do what I did: I did not connect the dots on the "Special" instructions for the polymer plate. You are specifically directed NOT to torque to spec (in lbs) for this plate. I was all set with my slide and had the (wrong) instructions up on the screen, direct from CHPWS. I proceeded to set my Wheeler to the specified amount (for non-polymer plates) and promptly drove the screws all the way into the plate, deforming the chamfer completely. Thus completely blowing $70 down the drain. My bad.
After this experience, I ordered a steel Forward Controls plate, and have been completely satisfied with it.