hi my 1988 mercury 20hp motor is cutting out at wot. i just replaced the switch box that died. i didnt have this problem before i changed out the switch box. its starts up great idles great but after 4-5 minutes up river at wot(or close to) it just cuts out for a second then you let off and and its fine. This has happend to me twice in a row and never right at the launch like the motor must be warm first for this to happen. I checked the plugs there good its has new gas and mix 50:1, fuel filters brand new, pumps plenty of water. Ive pumped the primer bulb when its cutting out no luck there, what should i be looking for thanks so much jason
