i have 2 micrometers of space between my bearings and my crank shaft. I purchased rebuild kit from {non-oem} and it seems like the bearings are the wrong size, because all but one connecting rod is original. Please help
Send that junk back to whoever you got it from. Then go to cummins and buy genuine cummins bearings, don't gamble your engine to save a buck.
It's also well known that you have to check the part number of each bearing as you take them out because you could have one or more oversized. They can come from the factory that way and you'll never be able to tell just by looking at it other than by the part number itself.