There was quite a bit on the web about the top wing separating during flight. I had one come apart during straight and level flight. Talked to mister Patrick after this happened and he told me that after selling the design he had no control over changes made by the new owner. From the pictures he mentioned that it appeared the design and quality of wood left a lot to be desired. The center section was riddled with mold and this you could not see with the covering in place.
Dennis