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RCA-SHORT BAND & CHAIN DEMENSION CALCULATION
The "Short Band at Connector" was a 5 years issue. It was tough because it was caused by different reasons and related different department:  manufacturing, production, R&D, and quality control.
In order to solve the issue, it's necessary to inspect the rejects carefully, draw  details of the assembly, recalculate chain dimension, improve process instruction, and train the supervisor and operators.
Here is a informal report (Example 3):