Erans,

On this page http://www.rcscalebuilder.com/forum/...398&PN=1&TPN=9
I documented the building of the stab/elevator and mounting on the fuselage.
Two things: I always mount the stab on the fuse with the wing bolted on to make sure everything is square.
Also, the ply elevator hinges were not glued to the stab until AFTER the stab was positioned in the fin.
First I slide the elevator horn/ply hinge asembly through the stab slot, then I slide in the stab and last I glue the ply hinges to center ribs of the satbilizer. I cut a small slot on the bottom sheeting of the stab to line them up.

JG