Fresh bore on cylinders? I cannot comment on KB pistons as I have not used them, but I have read/heard not so good things about them New rod bolts? Plastigage is a great tool, been around a long time, but I still only use it as a 2nd check upon assembly. i torque caps together with bearings and check with an inside micrometer. I just finished a 400 build with a melling HV pump from Butler Perf. All my mains were .002-.0028 rods .0015 my oil PSi read 25psi in gear hot 60 when driving, which is acceptable to me.
