I got the Timney trigger over 2 weeks after I had ordered it and after a phone call (they had apparently overlooked my order). Installation wasn't too hard but when installed in the action, the trigger was so far back that I couldn't get the bottom metal back on. I'll have to call Timney tomorrow and see if I can get a refund or exchange.

On a happier note, I found out what was wrong with the CZ trigger; a screw has loosened up. It had a lock washer on it but that apparently wasn't enough so I reinstalled the CZ trigger with both the lock washer and Locktite (not the high strength). The trigger now works like it's supposed to.