I have a Loaded m1a rifle with a M21 stock (Its the walnut stock with a cheek riser), and my weapon shoots horrible groups. I know this is because I dont have the gun glass bedded to the new stock. My question is, are those Sage EBR stocks worth the buy? How can those be more accurate then mine? It seems there would be a lot more movement between the stock and the weapon. I would like to purchase one before I glass bead my stock so I can resale. So any advice would be great.