Gosh, I do so want to be a troll and post a reply that will get NCCams in here
Did you slide back the way covers and have a look yet, Mike? If they are bad, there is little choice but to tackle it. I would remove the originals carefully, noting orientation, shims etc, and look for the bearing numbers. I'd go to a bearing supply house, rather than getting "original" parts from anywhere, if possible, but sometimes you might have trouble getting bearings of a certain spec from a general supplier.