Ok, a few months ago I was riding my lt250r and I was ripping through my backyard and my bottom a-arm fell off and it dug into the ground and I flipped the quad a few times destroying my headlight, bending my bars and snapping my thumb throttle. I bought new bars and throttle, and I bolted the bottom a arm back in and it keeps falling out. What do I need to fix this? A balljoint? New A-arm? Hub?