i recently purchased a 99 road glide with 24,600 miles have put roughly 900 miles on it and there has been a ticking noise that has become progresively louder today it was disturbingly loud and have brought it to the dealer several times and they keep saying there is nothing wrong with it anyone have any ideas what it may be. some have said it could be cam chain tentioner, Y pipe leak, primary chain but the dealer refuses to admit there is anything wrong even though there is a 2 year warranty