After roughly five decades of shooting Savages, I have only encountered three extractor problems and these were with only two different rifles during that time.
1- Buying a used rifle that had a brass build-up under the extractor claw to the point of not letting the claw pick up enough of the round to eject it.
2- The wrong ball bearing was installed from the factory, the fix was simply using the next size bearing, that problem was fixed by the factory as soon as they realized it.
3- People just not cleaning the extractor system while cleaning the rifle.
I have not encountered the weak extractor spring that I have seen reports of.