Hi Rob - I think it is possible to get what you want there by converting your path to a polyline.

Check out this previous thread on how to do a tank tread type array, which is a similar problem:
http://moi3d.com/forum/index.php?webtag=MOI&msg=1634.9

If you'd like to post a 3DM file with your particular curves in it, I can try to give you a demo with your exact situation.

- Michael