I've got a gen 4, glock 34. I have stupid large ha face and use the large backstrap. I want to add a little weight to the grip and want to try a thug plug or the Seattle Plug, but it apparently they don't work with the backstraps. Has anyone managed to get one to work with a little dremel magic? I don't want to add a weighted magwell yet because I don't want to spend the extra $$ to swap base plates on my mags. Thanks for your time