My 1997 200 hp johnson ocean runner runs perfect except when you get in rough seas that give the boat a hard jolt the engine cuts back about 1200 to 1500 rpms.from 4200 to about 3000 and seems to bog.But when you come off plane , turn off the key and re-start it runs fine untill you hit another big wave.I've Had this boat for about two years and take it off shore regular and have had no past problems, even in rougher seas than when it was giveing me problems. Can anybody help????? 