Another lead-brass-flange-repair question: Attach 2 flanges together?

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Francy

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Hi there,
Long time reader just joining. I love antique plumbing. So hj is my hero.

My question concerns an old school installation with a lead bend. I already did one of these (brass ring, peen lead) and it turned out well.

But my second one poses a problem. I'll try to make this succinct:

The new brass flange does not line up with the holes in the very old and thin-ish concrete floor. I'd prefer not to drill new holes because possibility of cracks.

The Pasco red repair flange does meet the holes, but cannot join with lead.

Can I securely attach the brass flange to the Pasco flange, then screw Pasco to the floor? A flange on a flange?

If only someone made an old style brass flange with a larger outer diameter that could reach the holes in the floor.

Is my idea unwise?

Alternatives (except drilling in concrete)?

Thanks!
 
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