Last season out of the blue my sync gauge stopped working correctly . Talk to tele flex and they recommended replacing the module which didn't change any thing.Tested the gauge and it is working correctly.My tachs and gph gauges and ear all say the motors are in sync but the sync gauge is almost pegged to the starboard engine.Not sure where to check next.Going to check connections at ignition module next.Both engines have new caps plugs and wires.The sync gauge seems to work up to 2,000 RPM.