I have a 37 dictator. it will not start. turns over but will not start. the car ran great after a rebuild for the first year. [4 YEARS ago}. the second sarted ggreat but soon had starting problems . last year would only start by pushing it. I have bypassed the switch, changed the coil, plugs, points,cond., wires, cap and rotor. and the battery checks good. what am I missing?