I've had great luck using slip-on finger groove grips from Pachmeyer on mt TT-33. Had to cut them down a bit but, after a LONG day of shooting, my hands felt way better than without them. I also have a set of the Marschal grips as well as Tokagypt grips. I've never used to Tokagypt grips but they seem comfy, maybe a little large for my hands though. The Marschals will stay on my TT but with a couple of mods.
Cheers!!