Hi, Ebbie. I play that too, having found it in 'the Fiddler's Fake Book.'

I've listened to three versions of CF to Redcastle on YouTube. They are very like CF to Red Gap, but they only have two sections. Campbells Farewell to Red Gap has a third section. It seems monotonous, and I believe it was added to let the fiddle 'stand down' and allow the other players to show off. In a word, bluegrass.

Is that what you play?