Hi Kjell
I'm building a Spinell for a friend of mine and theres a couple more coming from other builders. The Spinell has a little Messerschmidt over it, so it also resembles an earlier design called Genesis, that I have flown, ( Not the Chip Hyde Genesis, but the Peter Erang Genesis ) and they both fly a little fast because of narrow hulls, and totally without mixing of seitenruder/ höhenruder mixing.
You might want to reinforce the landing gear holding points in the fuselage.
Regards Eggert