When the formers are laser cut they have their number laser cut into the front and it is cut quite deep into the wood so if you put the formers in the wrong way round they show.
I have attached the rest of this years (2012) builds ,a Scamp built from the original plans but with modified cabin,a pacific balsa challenger with a small brushless motor and a small seaplane tender built from a 1928 photo. I had plenty of time stuck indoors recovering from an op so had to have something to keep me busy.