So I just got my bike going after a long winter in hibernation. I changed the plug, put in fresh gas, cleaned the air filter and changed the oil. The bike starts and runs great but when I pull in the clutch and let off the gas after riding it the engine stalls. I've searched the forum as best I could and saw that one person had a similar problem and found it was the brake light switch causing it. Any idea what else could be causing this problem? Thanks for your help.