Most early Marzocchi have an axle that shoulders from the right, pushes through both forks, and nuts from the left with a pair of pinch bolts on both fork legs. But, there are V11 with the earlier (Sport 1100/ 1100 Sport) configuration, as shown, that are not Öhlins. I've never seen that on a 2002 LeMans, but perhaps they were changed? In that case, if the (left side) spacer was used from the Marzocchi on the (right side) of the earlier configuration, it would surely not be correct.
In fact, I wonder if the forks are WP? And that a spacer from Sport 1100/ 1100 Sport would be the solution?