We have similar processes.
It is not worth recording for recordings sake.
From time to time we make a study of rework and investigate rework, process methods and improvement strategies.
This may lead to process changes, training or just leave everything as it is as the MD is happy with current costings from that area.
Sometimes you draw a line in the sand, sometimes you have to know when to put your head in the sand
Returns to that major work area are monitored to see if any related issues need further improvement and are tabled and actioned at regular manufacturing group meetings not on CA's etc.