I'd gotten tired of looking in to the hole in the alternator cover for the mark and remembered that the cam timing marks are easily viewed through the screw plugs in the head.
By watching for the "L" mark in the rear (intake) hole, you know you are just about to see the "R" mark in about 90 degrees crank rotation.
http://www.chinariders.net/showpost....16&postcount=5
Third picture down. Note,,,,,,, they're not really yellow.