twice while coming to a stop with out Appling breaks the motor RPM dropped like it was bogged down;. this happened at roughly 5-10 MPH. I had 1/4 tank of fuel and motor temp was 175 degrees,( light trail riding). I drove it a couple miles today and it ran fine. roll over valve has been replaced so its not a fuel pressure issue. Also there are no codes on the ECU. KRX has 600 miles on it. " I've been told if the plugs are starting to foul it could cause issue"...............any thoughts??????