FED-2 rewind problems

Hi! Is me again, this time the problem I have is with the Fed-2. The collar from the shutter release button doesn't stay sutck on the B when I want to rewind. What should I do? :( I don't want to lose my film.

Fed 2, Sony A58, Zorki 5

Dear Kaizoku
Nothing anormal You must press down the colar and turn it clockwise up to the end. It will remain there.
Regards
LP

I did that, thanks for help Luiz! First I got a bit scared, I thought it ruined the camera, but after I played with it a bit, I got it worked again. Thanks!

Fed 2, Sony A58, Zorki 5

Only just found this thread.

My fed2 has the same problem, but no matter what I do the shutter and its collar won't stay down so I just hold it down with my thumb when rewinding.