Thanks. I'm going to replace the head with the exact same head. It could be rebuilt for about 60% of what a new one costs but the brass base is all corroded and looks like crapola. All the hoses need replacing too.
On a side note... there is what appears to be styrofoam junk directly under the diesel. I've never seen stuff like this before and have no idea what it is there for. Someone on a different forum suggested that it might be there to catch drippings. It is full of grease etc and stinks. Can I remove that stuff safely?