I think that's the only source. Either take it to a wood shop for repair or get ready to pay alot of money for a new Shenandoah stock.

Those pins are supposed to stay in. No need to remove the stock - as long as you keep re-cleaning/sealing the corners where the barrel meets the stock. I use Hoppes Gun Grease with my Shenandoah. It keeps moisture, hand oils/stock oils, cap residue & powder fouling out. As a matter of fact, Hoppes Gun Grease is now in my bore too.

I hang that rifle on a wall in my family room with a powder horn hanging below the trigger guard. Using storing oils left an oil spot on the carpet once - so now I use the grease. That's the best feature of this grease ... it's intended for guns like mine that might not see any hunting/range use for several years.

On a last note, if you need help thoroughly cleaning that rifle's powder channels/drum area while leaving the stock on -- this includes hot water flushing.... I'll help you solve your cleaning problems. All you need to do is ask. I don't want to type it now thou.... it's another paragraph or two.