2000 Seafarer 225 Yama 2 stroke Saltwater Series - Everytime she takes a hard bump engine losses all power for 1 secnd then comes right back on. It would be like turning a light switch from on to off & back on in 1-2 seconds. On land - checked fuel pressure, filter & clarity of fuel all ok - checked grounds some mild build up cleaned & tightned - Batteryswitch inspected tight & clean -- Any thoughts??? Bad Ignition Switch??