Who measured the cylinder for you..?.. The micrometer used sounds like it may need to be calibrated .. The large micrometers come with a rod (with the length written on it) for checking the calibration ..
Stock is: 90.00 - 90.01 (3.543 - 3.544) .. service limit is: 90.10 (3.547)
Stock is: 90.00 - 90.01 (3.543 - 3.544) .. service limit is: 90.10 (3.547)