This isn't going to help your situation, but is just something to think about. You put X amount of twists in the string and cables according who? The manufacturer? Manufacturer of the string or the bow?

In any case there is a fallacy to this. You are working on the assumption that whoever made the string/cables has made them to a length that will bring them in specs when you put the recommended twists in them. Such isn't always the case.

What you might be able to do to get some poundage back is to forget about the A2A measurement. Twist both the string and the cables to put more prestress on the limbs. To gain 4# the A2A shouldn't be too short. I don't know just where things were before, but twisting just the cables increases the weight, butincreases the draw length and this may not be what you want to accomplish.