The car is still settling down after an engine swap. I took it out to a local indy shop and he gave me the latest version of the coolant cap--I gave him my K&N oil filters which I don't need since I got the spin on adapter.
It really is settling down! The D-4 lights for the TIP stopped flashing and the paddles work again. Doesn't appear to be marking it's territory, either. Still burning off the oil on the engine, so it does stink. But not leaking coolant anymore and that's a good thing.
He was kinda impressed that I changed the motor myself. I'm 66 year old guy. Spent lots of time on the deck of the carport on my back.