Does anyone know what size flexiclamp for the removal of the film advance leverSRT101

Does anyone know what size flexiclamp to use for the removal of the film advance lever on a Minolta SRT 101?
Or how can I do it. I tried with my fingers, impossible. May be anyone that lives around Berkeley, CA can help me out?
Thanks in advance

Use a rubber stopper about the same diameter as the screw. Push down on the stopper as you rotate it and the screw should come right out.
If that doesn't work super glue a flat piece of metal to the screw(I use tweezers) let it set and unscrew. The residue will clean off with acetone.
JUST ONE DROP!