I just bought a new ZTR with a 27 kohler.....after the first 5 hours, I changed the oil...as they say to do...all went well,,,UNTIL I opened the oil fill cap to add the new oil and check the level....the problem is,,,,,,,THE DANG DIPSTICK THAT IS SUPPOSED TO BE ATTACHED TO THE OIL CAP IS GONE!!!!! The only place it could have gone is in the .....that place where all the oil is in the engine...(can't spell resivoir...resavoir,,,etc.) How serious of a problem do I have....? Is this going to hurt the engine....cause' I have no idea how long it's been in there...could have been for all the 5 hours of run time.....!!!!HELP!!!!