I've only handling one in the shop and believe CZ has failed with the design. It sounds as if the latch is not engaging when extended, it may have a machining error or is something limiting it's travel?
A couple things
The cheekpiece should have two screws holding it in place, I don't see it lasting long without breaking.
If you don't have the stock fully extended and use a sling--attached to the stock point they provide, any tension (aka hang) will run the stock out to full extension. If they had milled the detent cuts all at 90 degrees it wouldn't do this. Changing LOP would require the user to press the latch to lengthen. If at full extension, a scope most likely will need a reverse cantilever for eye relief.
I'm not an engineer or weapons designer--but some of this is not rock science.
The other issue is a 2 moa accuracy claim?--2023 and a manufacturer can't make a bolt gun capable of better from a factory box? I know it's a field gun but that's poor.
Anyhow.