So i went to start my bike up this spring, i put in my battery and started kicking. Then it stopped, just jammed up. I found that one of my valve adjusters was missing. It had fallen out and was jamming it up. I took the head off and found the nut, but the screw is missing. I think it fell down in the by the cam chain. The bike cycles through now completely but i'm really nervous about where that screw is. If i take the head completely off and remove the cam chain, do you think i'll be able to find it? I don't know what's down there?