My novice experience: You need to apply a bit of Kentucky windage when installing the dizzy. As the dizzy gear meshes with the cam gear, the shaft (rotor) turns as the dizzy seats. If you want it to be on the #1 plug when seated, you have to point the rotor ahead of that distributor cap location so it will rotate to the right position when fully seated. Sometimes it takes a few tries. Before removal I had marked my dizzy flange and the block so I could install it back in the original place so the leads and vacuum advance stuff was facing the right direction. The smart guys on this forum probably have a slicker way of doing that.
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