You're going to have to lose a little bit of control throw then. There are a couple of problems you are setting yourself up for if you continue to push the servos so that they buzz at the limits of movement. The first of which is you are taking a big risk of damaging your servos. The binding puts stress on the drive train of the servo, which blow out the servo, damage the servo motor, or even strip the teeth on the gears. The second problem you have is that the binding can drain your batteries faster.

You'll be much better in the long run by making the proper adjustments to your control throws.

Ken