2009 Honda goldwing trike 23000 miles. Still don't know what the noise is that comes from the bike while accelerating. It's bad in all gears, 4 th is the worst. Went back to dealer he says it's how they all sound. After a while it really gets to you. Has a sort of a growling whine sound but when you let off gas it goes away. By the way it's a new roadsmith. Anyone else have the problem?