ORIGINAL: RamsesCH
Hi Alessandro
''..I had to put two blocks of balsa inside the fin and two hard wood rod in the rudder...''
Sorry,.. but how did you do that ? Did you open/divide the fin and/or the rudder
Kind regards
Rainer
No, I've done square holes on the fin and round on the rudder. I installed balsa blocks in the fin until they reached the balsa "wall" inside the fin. I've done a scheme of it (it's better and faster

) but let me know if you need more informations.
Ciao
Alessandro