The screw for the large knob which attaches the M1d scope mount to my M84 scope is stripped

Is there a way to remove the knob or screw and replace it on the mount?

If so, any one know a good source to buy a new knob/screw or send it for repair?

Numrich sells the complete mount for $67.55, which I assume are reproductions.

Any one had experience with those?

Thanks, Jawes
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