well, we had the problem return. Motor for 1 hour (no issues), sailed for a while, then after motoring about 45 minutes the engine bogged down again and almost stalled out. Did this several times on the way back to the dock and just barely got 2 knots out of it. After we tied up, we tried to re-create the problem and could not. It ran fine, even put it under load while tied up.
This was with a full tank of gas, new fuel filters, air filter looks fine.
any thoughts?