Getting my cycle back on the road soon. Cycle in question is a 1981 Suzuki GS450L parallel twin engine, 15K mi. Properly stored this past winter. Nothing funny, no mods, completely stock specs. I went to start it up and there is raw (atomized) gas coming out of the left muffler (tailpipe). I thought maybe the carb was clogged and put a can of Sea Foam in the tank and took it for a 1-2 mile ride down the street. Nothing. No change. Still raw gas. Power sucks, as only one cylinder is doing the work. Where do I start looking? Is is a spark plug issue? It doesn't have point ignition, it's electric. It almost seems like the left cylinder isn't firing, the right side seems to be firing fine, so the plug should be ok there as well. I replaced both plugs when I bought it last May so I don't think it is an age issue. Any thoughts?