Hey guys, new member here. My motor is skipping somtime at high rpm's 4000-5000.It runs fine at idle or slow speeds,I thought it might be water in the fuel tank or maybe the plugs? I removed the plugs and inspected them and they look Ok? They are gapped at .030, I have read in the forum that OMC's should be gapped at .040 ? The Champion brand I use is L78YC. Is this the correct plugs? I will change plugs and test run and possibly install a water/fuel separator. This motor has been flawless, any advise will be welcomed.