This morning GAM & I commenced clecoing the top skins in place to assist in the alignment of the fuselage with the hope of commencing some riveting of skins this afternoon. That process stopped when we discovered a fairly major problem with the fit of the rear skin & rib 6. As you can see in photo 2, we have a problem. I've emailed some photos to the factory & await the reply, I have my suspicions as to the faulty part & if I'm correct, I have a lot of disassembly ahead of me. Fortunately no skins have been riveted yet. I test fitted the vertical stabiliser as it will need some minor modification for the tailwheel mount. Whatever the problem is, it will take quite some time for replacement parts to arrive so we swapped kit boxes around & have started the centre fuselage preparation.