I finally got started pulling the engine off my 3000 this weekend. I was not happy to discover a big fan gouge on the back of the radiator. Looks like someone tried to solder several tubes that were opened. It will need to go to a radiator shop and be re-cored while I have the engine on a stand. It's been so long since I had any radiator work done, I'm not sure there are any radiator shops left that still re-core these old radiators. No, I'm not going to try fixing this with Bars Leaks, grin.