im fixing a Remington 11-48 old shotgun and after i found a spacer it needed it broke an extractor or extractor/plunger after 40 shots of #6. if someone knows how to take the bolt apart and/or knows a better place to buy parts than ebay $40. if this is normal and extractors just break, or could the fact it was ammo from the 80's effect it? any info would be nice, thanks in advance.