I've started on the cabin top by laminating all the necessary ribs as well as locating and drilling 1/2 pilot holes for the wing tubes. I would like to say that I bought this kit used, but I've had great luck with all the parts just popping out and the wood being in great shape! I've read a few threads about this kit, and granted the threads were from 2004, and beyond, but so far everything's worked as advertised! I've stopped for the evening, but tomorrow I'll get the cabin top built, mounted... and hopefully get all the doweling in place as well. I've also decided to add 1/4" carbon fiber square tubing to the window mullions as added support for the cabin top. I think this plus the other structural members ought to be pretty sturdy. We'll see!