Try to find someone close to you that can show you how to do this. Not very difficult.
If you can do a top end on a two stroke, you can check and re shim / adjust your own valves.
If you were closer I would show you myself. Maybe someone on here will help who is closer.
Its the old... Give you a fish feed you for a day. Teach you to fish, feed you for a lifetime... Thingy.
Plus its just personally satisfying.
Good Luck.