Hi mike, I have just finished drafting a cad remake for a 31" version of this model. now in has single piece lite ply bulkheads instead of the original balsa 4 piece design. so now 100% stronger and lighter than the original.
the redraft has taken many many hours to do so im not at liberty to release to the public domain however i can supply you the CNC routed parts, if your still looking that is.
Cheers, Jon. [email protected]