Yeah, I really wasn't trying to be too much of a dick about it; just pointing out that a CZ with a bit of break-in and a 13-15lb hammer spring can be SWEET. There's not a lot to polish or otherwise finesse.
The CGW spring kit uses a 13lb hammer spring, BTW, which is supposed to work fine with a lightened firing pin spring (and stock firing pin). That's where your substantial DA improvement (should be like 6-7lbs) comes from.
The 15lb, OTOH, I know to be just fine all on its own, and it's still massively better than what you get with the stock CZ spring. They're something like 18, at minimum.