My crane stock will not come off. This is not even possible to remove. There are no plastic parts to push out or anything to take off. The runner butt is glued on. I also looked up videos on how to remove the butt plate but no luck. People do it but I can't see how. I sound like the biggest noob ever but I swear I have looked everywhere. The book it came with has nothing about the crane stock. I cannot put the battery in through the front bc it is tapered . My G&P stock works fine but I want to fix this stock. The gun is the AGM 614, got it for free but please help!