maymia rz 67 pro II

I dropped my RZ this morning and at first all seem well but when i try to extend the bellows it is a little rough and the fine focus knob seem to skip every once in awhile . the camera bellows where closed tight to the body when i dropped it . where should i send it for repairs or does anyone know how to fix this problem.
Thanks
Mitch

Try this guy in the USA, he's factory trained and has all the rigs and jigs you see in the service manuals.