Thanks Peter H, I just went out and looked and shure enogh there are timing marks right where you said they should be. Thanks very much. We are planing our first trip with it for the end of November. We are brand new to this Motor Home thing and we are looking forward to our first trip but I want it to be a successful fun trip for my wife especialy. I am a retired owner operator, coast to coast, over the road driver so it is going to be great for us with this Airstream. Thanks Again, Tom