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In the engine specification sheet in the service manual the bore is listed as 3.190. My cylinders measure out at 3.1875 measured left to right and about 3.186 measured top to bottom, so very slightly out of round. Even in it’s worn state these measurements are undersized based on the stated dimension of 3.190 in the specification section of the manual. However, in a different part of the manual buried in a paragraph of text the bore is stated as 3-3/16” which seems more correct based on the measurements I am reading. My plan is to use the rigid hone to true the bore to my larger measurement of 3.1875 then finish with a ball hone and nylon honing brush for a plateau honed finish at the smaller of the two dimensions stated in the manual.