Gary Heathcoat, who owns the Al Master's plans, is in the process of re-engineering the 335 plans...He has brought them into CAD and is re-working them to bigger, better, etc.
It might be worthwhile to wait vs fighting the Don Smith stuff...
Here's the link to the orignial, and i'm sure yo can contact him here.....
http://www.wingsontheweb.com/do335/
Chuck