Go to
www.ktaddons.com/products.htm, purchase the P3-AT Energy Absorbing Grip Pads and a P3-AT Slip on Grip Cover and simply:
A) Cut down the front foam pad to account for where the CT unit's button is, then
B) Use a hole punch to punch a hole in the grip sleeve where the CT unit's button is.
Modifications/installation takes 5 minutes. It's what I did to mine and I'm very happy with it.
Surrealone