WuW - chopjock has a reputation for asking 'interesting' questions on this forum - he is a helicopter pilot so I assume some level of technical knowledge, like how a servo works.
I saw a picture today of a duplex bearing from another helicopter TR pitch change mechanism where the inner race and the ball bearings had separated longitudinally from the outer race which is an interference fit within the housing - manufacturing fault??????
Crab absolutely no disrespect aimed at nodrama at all massive respect for him if any man on here is going to make me eat humble pie it's likely going to be him. From what I understand the end of the inner shaft was found inside the outer shaft with what remained of the split pin. All am trying to understand is how the servo actuator could apply any push/pull force to it in that situation