Ahhh, I thought he meant he couldn't produce acurate enough plans (only joking Alex).
I can appreciate where Alex is coming from entirely - it's his design, it's a complicated one at that. Making plans available opens him up for criticism, demands for revisions, questions about alternative drivers etc etc.
No harm in asking, I just wondered if I could buid something lighter and smaller than a BFM O15 (but still with great bass before someone says O10).