As I was cutting the pattern for the bi-plane I noticed that the instructions say to cut the wheel hold to 17/64 and the rest to 1/4. I found that the only way for my wheels to work was cut the hole in the wheels to 1/4 and not 17/64, As I am typing this I just now noticed the instructions with the photo is correct while the pattern is not. I just that answers my question. Amazing what happens when you read everything.