Robert, I just re-read your post. The timing cant be 180 out if the clamp bolt is on the bottom. It can be a few degrees off because of the slots in the coupler, but not 180. The position of that clamp bolt is just an easy way to tell what position the cam is in. If the clamp bolt is on the bottom, the cam has both valves closed on no. 1 cylinder and its on the compression stroke. If the clamp bolt is on the top the cam has the exhaust valve open and its on the exhaust stroke.
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