I can't help with the stock setup out of the box. But after I put in the 13 lb mainspring and had done the action job based on the information found at the CZ forum the SA pull was 32 to 34 oz depending in exactly where the spring scale hook was placed on the middle area of the trigger.
I actually had an even lighter mainspring for a while which gave me a DA pull which just barely held the IPSC test weight. And I do mean BARELY!! ! At that point the SA trigger was a few oz below 2 lbs. But I got a few too many light strikes so I bumped it back up to the stock 13lb mainspring. That upped the DA pull to a hair under 6lbs and resulted in the SA of 2 or a hair over lbs.