Hi all Is there a rebuild kit for the OMS pump for this engine? The engine is surging back and forth over say 3500 rpms. I looked for the anti-siphon valve like some others talked about but there was none at the tank unles it's somewhere else on the line. When ya pump the bulb it takes off like it's supposed to. Fuel restriction. But I can't find anything so I am thinking maybe the OMS pump but don't want to just buy one and put it on if it's not it. Thinking a rebuild kit would be cheaper and would be willing to try that. Any ideas guys? Dealer couldn't or wouldn't fix. Mike