I just noticed that you are in Israel.
If i was you i would either try Gabe (JetJoeUS) or turbine sevice (that link i posted earlier.
In any case i wouldn't send it back to JetJoe.
Anyway it looks like the preload is jammed but i can't be sure.
You should be able to move the rotor a few millimeters forward and it should spring back on it's own.
Chris