We are at the final stages of building the quarter-scale flying prototype. The propeller spinner is yet to come, as is a final coat of primer plus a little fillet work at the wing-to-body intersection. We are very happy with the quality of work being done, and of course are looking closely now at our initial flight testing of the model. One thing spotted is an interference with the ailerons and the upper wing surface that needed to be cut back. One of the benefits of doing a 1/4 scale prototype is we get to find the little quirks that could have been a costly mistake in full scale, and the flying qualities will also be fleshed out as this scale of prototype should be very close to the flight characteristics of the full-size vehicle.