Good lord that looks very much like Brian Quickmires's little bird up in Canada !! He's had his for decades. I reluctantly sold mine twenty years ago.. (marital discourse to put it mildly). Great little airplane. A bit of adverse yaw with those big windows in.. but manageable. the Brits specified a bigger vertical tail and Quad city produced it.. so if you DO find any issues, I'm sure they could supply you with one. When I built mine in the early 90's, they WOULDN'T sell it in N America (I guess that would be admitting they undersized it..LOL) but a couple of guys who fitted floats had UK friends order it.. then ship it back.. yeah..
Enjoy!
Dave