Chuck, you make a very interesting point about the 'stalled attitude' on the ground. Are you sure that your conversion produces this? If so I would think it a most unusual tailwheel design. The only ones I have heard of were a couple of obscure pre-war designs which were speedily junked. Every conventional gear machine which I can think of has less than this angle of attack on touchdown. After all most aeroplanes drop the nose at the stall....