Do you mean adjusting it at the perch? (I can help you with that) Or are you talking about something else that I’m not aware of? Six month, depending on how frequent you’re riding maybe it’s an old oil issue?
Yeah, at the perch. I've had 3 (at least) oil changes in that time. When I first got it, the clutch engaged at about halfway in the lever pull. When George adjusted it, it engaged almost immediately when you began to release it, AND neutral was easy. It started to get farther and farther from the grip before it engaged, and got hard to go to neutral. I adjusted it at the perch so it engages almost immediately, but neutral is still very hard, and it lurches a bit when I put it in gear with the clutch in.
I suspect that you are experiencing cable stretch. The factory cable is a bit whimpy. You might try installing a heavier duty one like a Barnett. I think they are available from Motosportz and I know Halls carries them. If that doesn't fix the problem then the next thing would be the throw out rod, sometimes the ends get wore down and don't want to stroke far enough to disengage the clutch. For that you should probably talk to George, he can tell you what right rod length is.