I have a 1922 Buick with a 6 cyl. The car is an older restration and the last time the engine was runing was 12 years ago. I drained and added new gas and installed a new battery. When I push the starter button on the floor it goes down only about 1/2 inch and nothing happens. At this point I am just trying to get the starter to turn the motor over. It seems like something is not engaging. I have checked the linkage and it is fine. How far should the starter botton go down?