I'm hearing a ticking noise coming from under the gas tank, not sure where when I'm riding and in low rpm in 4th or 5th gear (40-50 mph). It does not tick when idling or when accelerating. I had new adjustable push rods installed at the end of last season, would these be ticking? Is it harming anything? I'ts got plenty of power and other than the annoying ticking noise runs real good.