Ok so I was playing my Laguna LB224 and it seemed like the tone knob was really loose as I was fiddling with it. I usually dont touch it so I dont know how it happened, but it ended up falling off. I've seen other forums say just tighten the screw however...there is no screw on these particular knobs. Its a metallic looking knob with a rounded off top that just has a small black circle on the side where I think the screw would have gone on a normal knob. I know a screw hasnt fallen out too because the volume knob works fine and it looks the exact same. I cant even stand up to play anymore because it keeps falling off. Any help would be appreciated.