Ive got a 02 400ex with a full yoshi exhast and a uni filter.Ive not had time to jet it out yet though it seems to run fine like it is.I only rode it for about 10 minutes last night and when I stoped the two header pipes were bright red hot from the head to about 5 inches out. Is this normal for an aftermarket pipe.Any information on this would be greatly apreciated.....