I have a Volquartzen Extractor in both my 10/22 & MKII Rugers..
They don't cost much & will turn a jam-o-matic into a custom plinker..
My buddy bought a all weather 10/22 & it was a JLF & just swapping the extractor for a Volqaurtzen Exact Edge Extractor healed it for good.. It's 100% now..
Give it a try!! You'll be glad you did..
You might also clean the chamber realy well with a bent brush around .270"..
I drilled my reciever so I can clean from the breach & stay away from the crown..
Good Luck LT1_MASTER