First put new plugs in it, and check for all cylinders firing.  Local repair shops should be willing to shoot a laser thermometer on the pipes for free (if not don't take your stuff there)  go through the carbs again.  after 5 months of fuel sitting in em they are gummed up. it usually takes out the idle circuit, but maybe a piece of varnish got sucked up in the mid circuit. 

Last Edited By: chopfan 08/19/12 4:13 PM. Edited 1 times.