Ok, so I think there are two ways to do this in iTunes:
1) Unsubscribe to the Podcast, then resubscribe.
2) Click on the little arrow in the Podcast title, and it will take you to the iTunes Store and you can download whichever episodes are available.
Unfortunately, both of those require that the episodes you are looking for are still on the iTunes Store. Podcast 8A is
not, so that doesn't really help.
Good thing I posted that other link, eh?
Happy Weekend, all!
BigJohn