Does anyone else think that these models might be a little over-powered? I had a Lanier Citabria ARF with a 64" wingspan and 44.5" inches long. This model flew great on a tower .46. I installed a magnum .81 4-stroke and it flew great on floats- just needed some tail weight. The one they call th .75-.91 is not much bigger that the one I had. Just my humble opinion, though...