I epoxied the 3/16 titanium rods in mine last night. Went from the very end of the forearm to the last compartment before the recoil lug. Notched the internal ribs so the rods would fit all the way down in, right against the outer edges of the stock, and filled with epoxy to the level of the ribs. BIG difference. Although I would still be a little hesitant to use a bipod, the twisting is basically gone, unless you really try to gorilla grip it, and the offhand feel is much more solid.

BTW, 3 of the LocTite syringe type epoxy packages fill the voids perfectly. It seems to feel a tiny bit heavier, although I like the balance.