Has damaged no 3 piston several times. Just got it back together and noticed it was a lot warmer on no 3 than 1 and two on the hose. Since it has damaged no 3 several times I degreed the crank and marked the pto hub respectively along with a pointer while the engine was on bench with heads off. Crank was within less than 2 degrees. I checked timing at a high idle and all three cylinders are within a degree.