So the bearing is a 10x19x6. Mine is a little notchy. I don't have a spare but have a few 10x19x5. I don't see the big deal in a mm to limp by until I order my next order.
I looked and the Gobby 570, Logo 600sx and trex 600 all use a 10x19x5 top main bearing.
I expect it to last less, but I don't see a hurt in it. Any input?