Everyone needs a Big Daddy. Fun build. Flies great. I'm on my second and thinking about my third... I would highly recommend substituting the stock shock cord for a Kevlar leader with an elastic shock cord. One of the other reviewers also recommended on installing the rear centering ring after gluing the fins and added fillets to the motor housing, which is a good idea. The instructions also do not add much for gluing in the rear centering ring to the BT. I'd recommend adding a nice fillet there as well.