Does anyone know a quick easy way to shim or possibly make the wood swell on a lower Romy G foregrip thats mounted on a AKM? I bought the set from a member,and I'm very happy with all of it - but the back end/end closest to you when the rifle is pointed down range, doesn't fit tight enough as not to have a slight wobble to it - there was some front to back play, but I cut a small diameter o ring and used it in between the front holder and the wood before locking it down and that worked just fine - no so on the back end. Any idea's guys ???