Rebuilding my 3b and have collected pretty much all the parts needed except for rocker arms. Mine have deep divots which I assume is from lack of oil. Anyway, my 3b has a rotary pump and has the late style rocker arm with the 6mm wide adjuster. I’ve called a dozen machine shops and none of them repair rocker arms since it’s a cheap item to buy new…. Does anyone have a machine shop that they know that will repair rocker arms or have any rocker arms that they’d be willing to sell or know if the early style bj40 or 8mm adjuster screw type will work. I have four good early style exhaust rocker arms and was thinking I might have a better chance at getting an early style intake rocker arm -don’t know if that’s true….