I just got a new strumgeshutt III, and the left side sprocket wheel came off. I looked all over and I couldn't find a screw that might of come out. I noticed. The inside wheel had bumps on it, and the outside had matching holes. I attached the wheel to the track, banged the wheel together with the inside one and it seems okay. If there is a screw, does anybody know the size, and where I can get it. It's a hen long upgraded strum.

thanks and merry Xmas.<br type="_moz" />