Ok then, if the manual states you can release the slide with the slide stop lever, then people are perfectly justified in their complaints and CZ-USA should issue a recall and pay shipping both ways to fix it period. Nobody should feel obligated to take it apart and sand anything, or wait until they've cycled the slide X number of times it fired x number of rounds, that's total BS. When the gun is delivered it should work 100% as stated in the manual. If it doesn't then it's on CZ-USA to fix it so it does. They can offer an at home DIY fix instructions if people choose to do so, otherswise they should be able to return it at no charge to be fixed at the factory
I suspect CZ got in a rush to release them since they were already behind schedule drawing a rash of complaints, plus the other manufacturers had already released their new striker fire models into the market. If that's the case, bad on CZ-USA for handling the release of this gun badly.
I sold my CZ P-10C, not necessarily related to these relatively minor (IMO) issues which obviously are not minor to others as is their right to feel that way. I was still impressed with the accuracy of the gun when shooting, but I also bought other new striker fire guns that are just as accurate. Held my own shoot-off between my P-10C and my new Beretta APX and in my case the Beretta won.
These issues with the P-10 in no way affect my opinion of all my other CZ hammer fired guns, which are probably the finest handguns I've ever owned. Nor will this affect my opinion of any follow on releases of the P-10, I would be most anxious to see a full size and Subcompact version coming along soon. I suspect they will have learned a lot from the release of the P-10C, and I wouldn't expect to see this repeated again.. I know many CZ purists will disagree and find no fault with CZ-USA or the P-10C, and that's perfectly fine if they don't mind tearing their new guns apart and finish the manufacturing process themselves with a bit of sandpaper or a few hundred rounds of their own ammo. Perfectly ok, as it is for those who choose to return their guns or sell them. Free will and freedom of choice is a wonderful thing.