I've got the d model also. I can cut out another set of ribs using those as a pattern. The problem is that they made changes to the fuselage to accept the newer non scale wing. I'm not sure just how much was changed on the fuse other than the wing saddle. It would probably be better to build it just as is and do a build thread on it. The kit still has the original written building instructions and nothing on the new wing other than what is on the plans which have been completely re-drawn.