I have a 2007 VN900LT. The bike has a tapping noise coming from the engine upon start-up when it is hot. The noise goes away when the oil circulates after about 1 minute. It is not there when the engine is cold. The dealer said he thinks it is the hydraulic tappetts, but I understood that hydraulic tappetts are designed not to make a noise. The bike has only done 1140 KMS so far, and has just had it's first 1000K service. Please can any of you offer suggestions, or have anyone had a similar noise?