We bought a 65 restomod with a 302 which i think has been built up a little but it has started to 'JUST CLICK" sometimes when we try to start it. I have had the starter tested which tested good, changed negative battery cable, checked voltage on all wires to and from the starter. I do not know where to go from this point. I do have the starter off the vehicle at this point so any advise is appreciated.