it should be a cable clutch, the lever should have a just a little play when all the way out, I have had several KTMs and have had to file the notches off the basket on the older ones, never had plates go bad on one yet, but it could be plates as well...look thru the oil fill hole with a flashlite and you can see the edges of the clutch basket, you may be able to see a waviness to the fingers of the basket...if so take it apart and evaluate the basket, many times you can file the waves out one time...next time it needs to be replaced
Also, auto trans synthetic fluid will make it shift better, reduce clutch drag and find neutral easier