Where margin leaks
The bid gets done. The checking doesn't.
The strain shows up the same way in most contracting businesses:
An estimator doing takeoffs on Saturday because the bid is due Tuesday.
An owner still reviewing drawings at ten at night.
A project manager helping bid work instead of running it.
A vendor quote that lands thirty minutes before the deadline.
Nobody re-checks a finished bid on a night like that. On the bids I reviewed, the errors nobody had time to catch came to 4.9% of bid value. On $10M of bids a year, that rate is roughly $490,000. Run it against your own volume.