Roto Window Crank Mount

A home owner from Carleton, MI says:
The Gray plastic, the screw mounts to hold the crank assembly to the frame broke off.
Is there a LH & RH mount?
Both of mine in my Bay window are broken.
Is the metal replacement 39-248 the part I want?

The current plastic one has # G2-056F-02

Thanks
Marty
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Bob from SWISCO responded:

Thanks for posting, Marty. I agree, the 39-248 Roto Operator Base looks right. Let us know how you make out.

A home owner from Carleton, MI says:
I have it out/off now.
I can take some measurements later.
The crank assembly has SLOTS for the screws so I have a little give.
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Bob from SWISCO responded:

Hello again! I'm afraid these photos don't give us any new information. I still think our 39-248 is our best option.

A home owner from Carleton, MI says:
Let me answer the age old question will the Swisco Metal 39-248 Operator Base replace the Roto G2-OSCP-02 Plastic Base?
Yes but it is NOT a direct replacement.
Will need a 1/4" shim under the Swisco to equal the level of the Roto.
And NEW screw holes made for the Swisco.
None of this constitutes it will NOT work.

Everything else measured the same with Starrett Digital Calipers by this Tool & Die Maker.
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