I built one several years ago. First fiberglass and foam wing project. Little work involved compared to major manufacturers. I bought the retract kit. That turned out to be a lost cause. The pushrods are a little tough to install inside the tail end of the fuse. They are nirods, same as ailerons. I guess the biggest complaint was the cost and materials required for finishing. It really drove a high price for a 40 size float plane. The second complaint was the flying habits. I had one of my clubs guru pilots test fly and some subsequent flights. He never came a way with refuel it lets fly again. Real bad climb problem. I spoke with GP sales. They gave different incidence numbers than on plans. The stab compared to the wing is a serious "v".

With all that said, she really cooked along on a 46FX with pusher 11x7. Talk about a plane no one has. Check out www.nwrcc.com. This is a pic of my plane. I eventually sold her bcs of being a handful for my capabilities.

The ACE seamaster is a super sport flying float plane 40 size. I have built the 40 and 120 size for a friend. The ultimate float plane is the Goldberg Cub on Goldberg floats. Very rugged, beautiful with an OS 70 4stroke. No brainer when it comes to setting up the floats. Self aligning. Excellent for the lazy pond . I have built and flown a couple of these. Stronger than the Great Planes Cub kits.

Hope this helps.