Four days after that meeting, Frank found that two of his key people on the 802 design had been called to Production for emergency consultation on a bug found in final assembly: two halves of a new data transmission interface wouldn't fit together because recent changes in the front end required a different chassis design for the back end. Another week later, Doc Reeves walked into Frank's office, proud as a new parent, with the new filter design. "This won't affect the other modules of the 802 much," Doc had said, "Look, it takes three new cards, a few connectors, some changes in the wiring harness, and some new shielding, and that's all." Frank had tried to resist the last-minute design changes, but Bill Hunt had stood firm. With a lot of overtime by the engineers and draftsmen, Engineering Services should still be able to finish the prints in time. Two engineers and three draftsmen went onto 12-hour days to get the 802 ready, but the prints were still five days late reaching Dave Schwab. Two days later, the prints came back to Frank, heavily annotated in red. Schwab had worked all day Saturday to review the job, and had found more than a dozen discrepancies in the printsmost of them caused by the new filter design and insufficient checking time before release.