Thanks for the essay, thats helped focus my thoughts.

You are confirming what I was dreading, that something isnt quite right in the way it has been put together.

I suspect something internal as opposed to the selector, due to it only being tight when the motor runs.

I am a bit gutted realy, as I was ready to take it down for an MoT after rebuilding nearly everything else on the bike. The transmission wasnt even on my radar for ant attention due to the bullit proof reputation they have.
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Russ

MC21SP