I'm checking the FR10 bracket estimate. The old route has a press operation between welding and accepted dimensions. The new spreadsheet removed it and kept the old acceptance figures. Nobody can explain that leap, but everybody likes the resulting cycle time.
Ask whether the old route cards identify those batches; an average based on memory would give the spreadsheet another attractive number with weak foundations.
Keep the missing period visible alongside any quoted rate, and have the trial cover the current component and fixture proposal rather than reproducing whichever old batch is easiest to document.
Trial scope is with welding and quality now. Current revision only, with individual pieces followed through released measurement and any correction. No results yet. At least the estimate no longer pretends the press was decorative.