Hello I have a 2004 Winnebago. I had the Onan whisper generator serviced 8-2018, new starter, fuel pump, fuel filter, spark plug. I only put 24 hours on it since then. I start it regularly. I am getting ready for a trip and went to start it, it will not start. I took it back to the same generator shop and they put in a coil (used) is all he had. I drove home and the generator stopped again. I am going back Monday. I have checked the oil. Does anyone have any input on any problems with these generators?...