I have an Echo PB-602 blower. A couple of days ago, an employee put regular instead of mixed gas in it. Of course, the piston siezed. It did not sieze bad and I got it turning over really good now. The problem is that it is getting an excessive amount of fuel now. When I pull the rope with the plug out, I can see fuel splashing around in the cylinder. I took the carb off and cleaned it all out - I didn't see anything that would cause it to malfunction. Any ideas? I know that it is getting spark - I saw it.