ok you are right on the tail fin,   its the vertical,   the horizontal is called the horizontal stabilizer in the book,  ( dont know how I missed that calling it a blade) ....the way it broke is it along with the tail boom caught the edge of an object,   and you were right again,   it slightly bent the tail boom but not the feather shaft ( good guess) but not enought to affect the tail boom operation,  just slightly bent ( barely)....about the 3 cyclic servos,   I can move them with the right side joystick but the left side joystick does not move them,  it only works the throttle turning the main rotor but there was a squeaking noise and the the main rotor and tail rotor intermittantly turn in unison,  sometimes the main rotor turns and the tail rotor does nothing,  then it will turn again all on its own,   I cant figure this thing out,  all connections along the feather shaft are tight and the belt tension is ok.