I changed the fuel water separator in my boat last night. All Academy had was a Moeller, 10 micron "universal" filter to replace the original mercury one. Before putting the new one on, I filled it probably within 1/2 inch of the top with fresh fuel. Today, we started the motor on muffs. It ran Ok but I noticed that it would bog down a couple of thousand RPM's periodically. I didn't think much of it but when we took it to the lake this evening it did the same thing. It would run really nice then bog down a bit, RPM's would drop a bit then, 3-4 seconds later it would run fine again. I am selling the boat and the new owners were going to meet us for a test ride. I WAS TERRIFIED. We continued to run the boat around the lake for probably 20-30 minutes. Gradually the problem disappeared. Was it just the new filter getting "broken in"? I'm not one to sell "crap" to anyone. So, looking for advice before they come pick the boat up early next week. The boat ran fine the entire time they were in it and were driving it. I don't want them to get it home and have it not run well. Thanks