I'm going to pull my 73 850's gearbox covers this weekend to check for the "bad" Layshaft bearing. I read a bunch of old posts about this, ordered the M. Hemmings video and have gone over the Old Britts tech stuff but never found a picture or a good description of what the "bad" bearing looks like or it's number other than it's from Portugal. Is the "Hemmings" FAG 6203 TB the only "ball type" that is ok or are there others that can be left in? And if I find any "Roller type" can I just close it back up & not worry? Thanks.