I fixed the extraction problem by replacing the extractor spring designed for a 40 S&W (some refer to it as an "extra power" spring. I'm well aware of delays with the USPS. That was not the issue.
Today at the range I ran various different ammo through the gun. Ranging from 90gr Frangible to 124 defensive (1300 fps). The only extraction problem happened one time with Winchester white box early in it. This was probably a three hundred round session. Split between this pistol and a Walther PDP compact (flawless with at least 500 rounds). To me a $1200.00 gun shouldn't have to be tuned. Right now I'm running a 13# recoil spring and an extraction spring that had to be trimmed.
The pistol is accurate.........it's a pleasure to shoot...........I've had the extractor out twice to clean nad opnce to respring (if that's a word).
The representative of CZ Custom could have been a little more helpful and I could have been a little more discreet complaining.
Once again I didn't mean to discredit the "premiere" customizer of CZ Pistols.