I'm 300 rounds into this gun after replacing the extractor with the parts MetroArms sent me and haven't had any malfunctions so far. I do still have to adjust the tension as the last shell in the mag usually winds up laying on the empty mag, but it does eject the rest into the 3 to 5 o'clock area.
I'm happy with the CS, but still not overly excited by the gun. It'll probably get traded on a 9mm at some point. (I have commanders from Ruger and Springfield that are more reliable, so time to eliminate the redundancy...).

James.