Honda XR80R 2003 Problems?

My Honda XR80R has been acting up recently. First, it cant run without the choke, Ive adjusted the idle, the fuel/air screw, and cleaned out the pilot jet. Still it wont run with out it. Secondly, it sometimes will start making this weird clicking noise and it the engine might die. Finally, the engine might cut out and when it does there is a weird smell that smells like burning paper. Can someone answer these questions on why this is happening and how to fix it? Im a complete novice on dirtbikes and how to fix them.

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