contender said:Welcome to the Forum oldowl!
Sorry to hear of your issues. Due to the rarity,, I'm not sure that I wouldn't have tried to repair the .17 before I sent it back. Freezing a cylinder can make stuck brass turn loose. The firing pin recoil shield could have been removed & the brass cleaned out.
Too bad you lost a good one! But, it didn't surprise me to see Ruger offer you a new gun.