Headgasket is what I'm trying to avoid as well. Looking at the headache it is to change out the headgasket, looks like taking the engine completely apart, I'm just going to swap the engine if the head or transmission every blows. As I don't have any money with Covid right now, I've been doing my preventive maintenance. I did the radiator as I assume it had some crud/buildup in it from the last 22 years.