Ruger no longer works on them. Get a guaranteed return if it won't feed a couple of boxes of factory ammo.
The Rody Brothers, Bill and Henry, still work on them.
Bill and Henry actually know more about most Ruger long guns than most so-called experts.
Rody's Gun Shop is in Newport, NH, across from Ruger's Pine Tree Catings Plant. They do all of the local transfer for Ruger employees and are open in the evening. Their telephone number is 603-863-3356.
Rody's should be the first place called if a person has a malfunctioning Ruger 44 Carbine.