Suzuki 2 Strokes

Finally getting some semi-reasonable weather here, decided to get the GT250 up and running. Back in November, I was going down the road when, all of the sudden the left cylinder just died. It was running like brand new, then nothing. Since it was getting colder anyway, I just put it away.. Anyway, I take it out of the garage, fire it up, and it's still just running on just the right cylinder. Plug is giving plenty of spark (tried another just in case). The carb is getting gas, and it feels like it's drawing air. I took the air cleaner off, fired it up, and tried holding a rag soaked with starter fluid over it, nothing. Not even a little sputter. I took the carb off and sprayed it out, still nothing. So I'm at a loss. Anyone have any ideas?

Do you have compression on the side that doesn't fire?
Swap wires from points to coils and coils to plugs to see if the coil actually fires the 'good' side or the good coil will fire the 'bad' side.
Make sure there's fuel in the carb that feeds the 'dead' pot.

Have you holed a piston?

Fried or dead cell in the battery? It's always the left cylinder that dies when the battery is not up to snuff.