Just got a 220/219 set and noticed the Extractor/Ejector on the 20 ga. is broke! I see Numrich has what I think is the correct part # 147700B. They also have a "Extractor Blank" for less money. Which, if either should I get? What is the difference? Also, what is the approximate value of a .30-30/20 ga. set in fair to good condition?

Thanks CZVZ