And i thought that 91FX was too much!!!
Thanks for your suggestions. As I have mentioned this is a second hand model already built. However I bought it with damage on the tail. The portion just ahead of the elevator stab was cracked. I was told that it was due to bad handling rather than a weak tail! Anyway, I had to remove completely the tail from the rest of the fuse in order to make the repair better and stronger. I hope that I have made a proper job.
Concerning the landing gear I convert it to a tail dragger and I had to move the landing alloy forward reinforcing it on the inside with some 5mm ply. However i do not have any prop clearance for the 91FX or even adequate clearance for the 75AX that is available. Looks that I have to make another taller landing gear.

I had 2 SPAD Sticks and I loved them. The first one had too many flights and it was getting "old". The second one experienced a receiver signal loss and ...RIP. Both were flying very well. I would like to think that this proper Stik from GP would be even better.

StZ