A few weeks ago on my drive in after a day of towing a tube around my engine speed seemed awful low. I checked my fuel line and discovered that a piece of silicone was lodged in the connections. Upon removing this and cleaning my line I checked the fuel filter which was slightly dirty but otherwise clean. During my attempts to troubleshoot the source I had apparently flooded the engine. I removed all the plugs and they were all wet 'n' oily. However, the motor still wouldn't start up after ~1hr of airing out the cylinders. I took off the two carbs - made no adjustments - and used a compressor to blow air through all orifices. After re-installation the motor started but I had no time to run engine so had to shut down. Next day I attempted to start but motor wouldn't. I repeated all of the above being careful not to flood again. Before I installed the carbs for the 2nd time I checked for fuel flow by squeezing the primer bulb and the fuel flowed fine. The battery has enough juice to turn kick on the starter/solenoid and get the flywheel spinning to what looks like pretty normal speed. Yet motor still won't catch - it doesn't even try to.<br />I haven't performed a compression test nor checked the plugs yet for sparks but they did look healthy when removed. I have less than 12hrs on the plugs and also the switchbox which was replaced last year. Some wires connected to the switchbox have insulation cracked and wrapped with plenty of electical wire. All connections appear solid. Where's the most likely source if I have good compression and spark?