I swapped out Torx grip screws for GI slotted. Took an old stubby flat blade screwdriver and ground it down so that it would fit the slot properly and not mar the grip. Then I covered the blade tip with Plasti-Dip. Overkill, but I was bored and I like using my Dremel tool.Proper fitting tools are the most important thing, it seems. You can sure bugger up a nice gun using the wrong tools.