I welded up Sergio's head tonight for his shovel. One of the heads had a bigger intake seat installed and by the time I machined it out the counterbore was getting close to the plug holes. I didnt want it to crack between the seat and plug, so I will be using a smaller seat on both heads. I've really been dropping the ball on this project and it bothers me because I want to see Sergio standing on the kicker of this stroker shovel. So expect rapid progress!