The DA trigger on my CZ70 is a two finger trigger (you need two to pull it). Its god awful. The SA trigger is quite the opposite, and actually very nice.
I tried to lighten the DA trigger by fooling with the main spring, with no luck. I did find a little "shim" (for lack of a better term) when I had things apart, that was some sort of mag retention gizmo that kept the mags from falling free when released. I left it out, and now the mags drop free when you hit the button.
The only other issue I had with the gun was with the mags. The gun wouldnt feed with more than 3 rounds in the mag. I had the same troubles with the supposedly "new" mags I bought trying to figure things out. I heard all sorts of stories and fixes researching the problem, but what ended up being the problem was just mag springs. Wolff has them, and its a cheap fix. Runs great now.