Could you check if the W-1 rib (the wig saddle rib) is really 11-1/4" long? Would be really great, because that would prove the scale in the MAN plan.

If you feel like it, you may also check the outermost W-12 rib to be 7-1/4". The first former behind the firewall (F-24) should be about 5-1/8" tall and 2-13/16" wide.

That should suffice. Thanks a lot!