I did a 230 a couple of years ago. I don't remember about the bearing width of the two center mains. I do remember that the oil holes do not align properly. You should make the align by either relieving the block or redrilling the bearing. I relieved the block to make the holes align. Oil flow at the two center mains is critical. Each main has to furnish two rods with oil. This is where usually rod burn out occurs. I had my crank cross drilled in this area. So far I have had no rod bearing damage in this area. Hope this helps.
