I noticed the exhaust pipe coming out of the head was glowing red when I went to take it off high idle when I was warming the 250FX up to dump the oil after about 2 hours on the engine.It was idling for exactly 2 minutes! Is this normal? Makes me a little nervous. I've always been a 2 stroke guy so this is all new to me. I ordered the fan kit today hope it helps...thanks guys.