Weird problem with the timing mark on my 850

Here is an easy way to get "close" timing. Put strip masking tape on the tank above the spark plug hole. Bring a piston to TDC on the compression stroke. Us a thin long screwdriver or piece of welding rod. Sit it on top of the piston. With a small piece of tape around the rod where it sits over your tank tape, make a mark on both. Using the rear wheel in high gear rotate the engine backwards until the mark on the rod tape in 5/16" lower than the mark on the rod tape. Check the mark on the rotor. It should be close to the pointer. If so tighted the screws on your electronic igition stator plate so you can see the mark
on the rotor through the hole higher up the left side of the stator plate. You may have to loosen the ignition rotor and turn it to accomplish this.
Put the plugs back in and see if it will fire up. It should unless you bodged it.