so i bought myself some plastigauge today to check out my clearances and it looks like im going to need all new main bearings. So which ones should i get? one colour higher than the one being used on my block? or what? need some advice here For example my #1 main bearing gave me a reading that was thinner than the .38 mm and bigger than the .51mm scale. (brown bearing) which bearing size should i use for that main?