Originally Posted by
HeliComparator
The last sentence of the report section you’ve published, seems to disagree with you.
No it doesn't.
That is specifically referring to the state of the servo at the time of the accident, because both sides were leaking about equally at that time. That faulty servo was on the aircraft for a long time, and over that time, with variance of wear in service and the rest of it, I seriously doubt that at all times during its in-service history that both sides were always leaking equally. Hence the after-start servo checks should have revealed a discrepancy at some point in the past.