Hey guys, I have a 51 8ba with a 4” crank, bored .060 over, and 8rt heads. I bought the heads at the same time but don’t know the history of them. I have 130-140 lbs of pressure in cylinders 1-4 and 110-120 lbs in cylinders 5-7. I did the tin foil balls thing in the cylinders on the 5-8 side...