I rode my bike yesterday, It wos running great! i rode 6th gear full throuttle for a for about a half a minute and i heard strange "ticking" noice and 5 seconds later as I wanted to stop (still full throttle) the engine just died! now the engine as no compretion and it won't start. I opened the cylinder and the cylinder and piston is clean (the piston has a only a couple of hours on it). What can the problem be??? Thanks, Eli.