[Sparks]

I was having some malfunctions with the cycling where the casing wasn't being extracted from the chamber.

I'd like to take your word for it that the cases REMAIN in the chamber. That symptom doesn't happen that often, but one reason for it is a tight chamber - one that has not been finished reamed. Often you will have to use a wooden range rod to pop the case out of the chamber. To check for this problem, just hold the barrel vertically and drop a loaded round into the chamber. It should plunk easily all the way in and fall back out on its own weight.

On the other hand, if the case is loose inside the gun, then the case has actually extracted, but has not ejected. That symptom is more likely caused by a faulty extractor or extractor adjustment problem. Contrary to what sounds obvious is the doctrine that says - if it doesn't extract, you have a bad extractor. That's like saying if a car won't start, it must need a new starter.

How about some photos?

-Sparks