I just aquired one of these. Do any of you have any experience with the flight of these kits. Was the thrust generated by the homemade duct sufficent to fly the model?

Basically, there is a ply plank coming up from the fuse that the engine is mounted on. Using this as a base, a wooden duct is built. What you end up with is a duct that is cut in half by the ply member.