ok!
i got some batteries for my spitty. i have now:
4x5s5000mah + 4x6s4500mah batteries. so i can make test with 10,11 or with 12s lipos. and for sure have all the ballast for nose i need.
i have laminated bottom of wing. and epoxied spars and ribs in it. it will be lot lighter now. here i come f4c... some installions need to be done still, before laminating upper skin and closing the mold. here is something to finish my outfit...

cheers

Jukka