Thanks for all the rplys. My tailsupport need to be removable because the tail servos are installed inside the fuselage. Is it nessesery to have tail support on both sides of the "stab"? according to my plan, tail support should only be on the under side.

Is it any issues using carbon fiber instead of music wire?

I think deadeye had the best solution so far. Perhaps i can produce something homemade from an aluminum sheet.