Bob, it was Robart #608HD. The wheel well needed to be larger (personal preference. I don't like these tiny tires Willhobby sends with their war birds. They look stupid IMO) so I didn't use the supplied plastic liner, and some work was done to the hard points. Linkage and the angle of the strut so it is straight when down is tricky. I would recommend doing each wing separately before you join them together. then it will be easier to see how the linkage has to run and it will be no problem to cut the channel for it from the root of the wing. Don't have any pictures cause the plane was dealt in a trade deal. I'll have another one and it will be much easier to build. It is a good stand-off scale Spit to just be an everyday flyer for fun. I'll do all the fancy stuff on my Pica Spit.