After 140.000km the gearbox of my 2009 Tenere gives problems. During some upshifting the mechanism blocks and I am unable to **** up. Some poking around frees it up and makes shifting possible again.

When it is shifting oke, everything goes smooth and it does not shoot out of a gear once it is selected. So it think I do not have bended forks but the shifting mechanism itself must be not as new.

Somebody experience with this. Can it be solved without splitting the cases because in that case it will be the end of the Tenere age for me.