Johnny, Sammo's bike is a 450. Clutch freeplay at lever should be 1mm.
After the first ride of my bike, the cable needed adjusting more than the lever adjuster would handle. The engine end of the cable requires taking up, and then us the lever end for fine tuning.
As for the stalling issue, well it looks like a characteristic of the engine, though I have reduced the number of stalls by blipping the throttle slightly just before releasing the clutch.
Timpo.