Check both ends of the cable for Adjustment/cable operation/wear or damage, if all is well you'll need to go deeper.
First check the clutch push/pull rod bearings, the top one can be done without removing the clutch cover. If there's any play it's buggered and will need replacing, fairly common on bikes 30k plus. The seal starts to degrad and water/crud get in, likelyhood is the bottom is ok as it's inside the casing but check it. The mechanism only moves a few mm at the bottom, if the top bearing is shot it will not release the plates properly. Giving you hard gear changes.
If that's all ok than check the ends of the push/rod for wear and then it's the plates, basket. Chances are it's at worst the top bearing.
If all of the above is good then you're looking at worn possibly damaged selector mechanism or dogs.
First check the clutch push/pull rod bearings, the top one can be done without removing the clutch cover. If there's any play it's buggered and will need replacing, fairly common on bikes 30k plus. The seal starts to degrad and water/crud get in, likelyhood is the bottom is ok as it's inside the casing but check it. The mechanism only moves a few mm at the bottom, if the top bearing is shot it will not release the plates properly. Giving you hard gear changes.
If that's all ok than check the ends of the push/rod for wear and then it's the plates, basket. Chances are it's at worst the top bearing.
If all of the above is good then you're looking at worn possibly damaged selector mechanism or dogs.
Later