Our accepted bracket readings come after the unpriced correction

Straightening after release. That's all the route sheet says

Ask the fabricator who did it. The route has run out of detail.

And check whether the supplier saw that route. If they only received accepted dimensions, they may not know they are pricing the last page of a longer process.

They only got the final inspection sheet. I've sent the route now

Does that inspection sheet identify the current bracket revision?

Revision B. New proposal is E. I hadn't compared them

Compare them before copying the old correction allowance too.

I would still flag the unexplained work in the estimate. Revision differences mean it needs investigation, not that the new job will automatically avoid it

Both fair. Price the investigation explicitly if needed, then let the current-part trial inform the process. I wouldn't promise either zero correction or the old correction routine from this packet.

Who is arranging that current-part comparison, Henry?