Help! I need a good mechanic!

You have to realize that todays gas goes bad in 6 months. Take apart a carb, fuel lines, or tank thats been sitting for a year. It'll be full of crap. I'd work my way back. Pull the carb. Check for crap. Fuel lines/filter. Check for crap. Look in the tank (don't drop it if you don't have too). Check for crap.

I'd almost guarantee it's poor fuel/fuel supply.