Didn't get the part about setting half clutch. Did you mean riding with half clutch? What i wanted to say is that, the bike kept stalling mainly when i had to press the clutch for down-shifting (to 1st or 2nd). Say, during the time i had to go over a speed-bump. So at that time, the RPM naturally comes down to the idling RPM.
One more thing, i'm still getting the smell as if something is burning. How long is this going to stay?


and good you took it to SVC and rectified it and told us 



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