I have built 2 Tiger 60's (Deluxe,Standard) and a tiger 40. On the trailing edge stock it has notches cut into it for the ribs. On all three of them not all the notches lined up. It is easy to fix, line the stock up on the plans, mark where the notches should be and then with a razor saw cut the notches. On both 60's the fuse's were a pain to keep square when gluing. I had to keep alot of pressure on the fuse as well as holding a square and glueing. Decide before you build if you want the tricycle gear or a tail dragger. The plane handels great as a tail dragger. If you decide to go that way, you dont have to put the ply pieces in the wing to hold the tricycle gear. Other then that they are awesome flying planes. I went from a trainer to the tiger 40. It was so much easier to fly and land. It was faster but easier. By the way both Tiger 60's that I have built have been for friends. If you have any guestions dont hesitate to ask

Michael