Having the same problem as a few others in that the clutch lever is too far from the bar with no adjustment to make operation comfortable I have come up with a simple mod for our bikes.
On the clutch lever there is a metal tab on the underside which operates the clutch interlock switch. What I have decided to do is to drill a small hole in the tab and insert a machine screw with a nut either end to secure. In hindsight it would probably be better to tap this hole for easier adjustment. The screw can then be used to move the clutch lever nearer the bar.
You need to loosen the clutch cable off then readjust when you find a comfortable lever span. I moved mine 1/4 " and it is now so much easier to operate.
The clutch friction zone only takes up a small amount of the lever movement so I have had no problems with slippage or gear shifting.
I may not have explained this very well but have attached a few images which may help
This shows the adjustment screw from the top
This shows the underside with the adjustment screw sitting above the plunger to operate the clutch switch.
This show the amount of adjustment I made.
This is a quick and simple mod which I have found works perfectly well