Try Hiwall's suggestions. The ammo in particular can make a huge difference. I had some issues once w/ some steel cased ammo that would stick in the chamber. It just hated that ammo. everything else has worked fine. I'm a CCI man myself, It's about the best compromise in my guns. YMMV.
FWIW, the extractor appears unchanged from MK1 to MK3. Ruger shows them all to be the same part anyway.
So... following that bit of logic, the Volquartsen extractors should follow the same pattern. If in doubt, call Volquartsen directly & confirm.