While removing the base gasket on my 500 I ran into a problem. I cleaned the old gasket of the cylinder and set it down to do something else, when I picked it back up the KIPS valves slid part way out of the cylinder. The problem is, I didn't mark the position of the valves, now I can't put the topend back on until I figure out the proper KIPS position. Anybody got any ideas? I checked out the KX500 topend rebuild breifly, but thats for a newer bike. Where can I get a manual for my 87?