hannesd makes a good point. I changed my stopper arm and spring as a preventative measure relating to it being a potential cause for a failing 3rd gear. This had been mentioned a few times on this forum as a 'suspect' part, sometimes blaming the bearing on the stopper arm and sometimes mentioning a weak spring.
It took about 90 minutes to fit .
Stopper arm is part 11
Spring is part 9
https://www.ajsutton.co.uk/genuinepa...ear-drum?uID=0