I have a bad habit of having too many projects going on at the same time. I'm trying to finish up my 530 gas engine assembly, which is close to being ready to run. Then I want to paint the 530 and case loader. I've had my 53 DC 4 in the shop for over two years to fixe a few oil leaks and paint the old girl. She's Been a good runner but needed painted. So I got a wild hair yesterday and decided to pull the DC 4s head and do a valve job. While I'm at it I will pull the sleeves and replace the O Rings and add a new set of rings. It's a 53 with live PTO, eagle hitch, foot clutch and heart shaped front bolster. I was surprised to find 3 7/8 Pistons, I thought the 53s had the 4 inch Pistons. Dick