Hi all, soon going to be picking up my dad's 1947 Lincoln coupe. He and my mom are looking at moving into assisted living soon, and he's passing it on to me. He and I have worked on it together many times, but there's still lots for me to learn. For as long as I can remember, it's been slow to crank, and when the engine is at operating temperature it gets even slower to crank. Even mom seems to think it didn't used to be like that. New batteries don't seem to improve things. He's cleaned battery terminals, polished up connections at the solenoid and the body ground, but it still involves some finger crossing when it's warmed up, or you'll have to push start it. Any ideas? Could the starter just be tired and needing a rebuild?