Give Robb Nortier an email, he is on here. He has a page on the installtion of the rear mudguard, it shows how the oil tank plate goes, with the 3 spacers that Ron mentioned.
Oh wow!
So the oil tank doesn't attach to the frame? It attaches to the rear of the battery holder and then attaches to the front of the rear mudguard?
Looks like I am going to need the rear mudguard just to run the engine!