Thanks for posting, Mark. First, watch the videos below. These will show you how you can remove your pivot shoe.
Once the pivot shoe is out, I recommend comparing it to our
15-046. Make sure the measurements match up. As for the pivot bar, it's harder to say. It looks like you have a nylon housing wrapped around it, which should make things easier. Instead of trying to pull the corroded pivot bar out, I'm thinking you should be able to just pop out the nylon housing. See our
26-330 for a replacement for the housing, and our
26-040 for the pivot bar. There is no guarantee these two parts are what you have, but they're worth considering.