1999 Ford V10 in a F53/F550. About a month ago I traveled some miles in a real downpour and all was well until the last few miles. I've read about the air filter becoming swamped and was parked for 5 days so figured it had dried out and all would be good. Trip home engine had a slight miss but no codes on the scangage and fuel MPG stayed normal. Fast forward to yesterday, started and run around the driveway and the miss is still there-no codes. Looked top of engine over, no vermin sign, no wires loose, plugs changed 12k ago and engine has 89k always run strong. I haven't noticed any loss of power either but can hear/feel this slight miss. Any ideas?