I bought an Xring several years ago and it worked fine but did misfeed every now and then and broke
a couple of firing pins. TS does stand behind their products replacing every thing that broke and doing
all the upgrades at no cost to me. I put it away for a few months and went on to other things of interest.
Then one day I decided to make a few modifications, like a Volquartsen Trigger group, which btw
is a great trigger group, and a TS magazine release. Now the problems began...misfeed...stovepipe etc.
The same problem most of you guys are going through. I replaced the extractor and the ejector, tried
all sorts of ammo and nothing worked. Then I compared the Ruger trigger group to the Volquartsen.
The one thing I did notice was the way the plunger that holds the magazine did not protrude as much
on the Volquartsen as the Ruger. The reason is the TS magazine release actually holds the plunger from
coming out far enough to hold the magazine firmly in place. So I started filing on the magazine release.
To my amazement, it worked, my rifle was out of the hospital. I passed on the info to my friends and
was soon fixing their problem as well. I also found you can file down the Ruger mag. release to make
the Xring run better.. Take a look at the pictures below to see what I am talking about.

My first Xring...Whistlepig barrel...Intensity Optics 6.5-20 scope... Ruger trigger group...squirrel killer.

My second Xring...Green Mountain barrel...Weaver 36T scope...Jard trigger group...target rifle...WORKS FLAWLESSLY!

 
Stock TS magazine release. Notice the position of the plunger.

 
Notice where I have filed the hump off and how the plunger comes out more to hold the magazine firmly.

Below is a picture of a trigger group with a Ranch Products mag. release, don't know who made the group,
but the plunger  protrudes a lot. Using a Ruger group with the Ranch Products part, it will not protrude as much.
This rifle runs 99.99%.

In conclusion...file away...I guess the plunger can't stick out too far.