thanks schmeky, and rice guy.. give us update post your new hammer.
mine until the hammer change was almost 100% reliable first strike with CCI ammo and 13lb hammer. I love the 13lb CGW spring and hammer change I did, (CGW is the best and has the best CZ upgrades bar none.. my humble opinion, in involved interest in CGW other than product buy's/upgrades to my personal guns)
so, with the new hammer and light main spring things dropped to 50% initially on first strikes. and always 100% on re-strike DA pull. now with no other changes, other than the small one I made (am hesitant to say).. back up to 80% conservatively.. no better than 90% yet.. but,
.22lr ammo is dang hard to find.. at decent prices.. I can almost actually shoot my .40cal cheaper than the .22lr. actually I can.
since when does .22lr ammo become cheaper/harder to find and more than quadruple its price in 3yrs?

makes no sense 2yrs almost post Sandy Hook. sorry to digress.
I actually shoot my centerfire guns more now. go figure.
anyway.... still have to make my 'other small change on the Kadet", am hesitant.. as I can survive just fine on the SA/DA action on my CZ's and pull a trigger twice if needed to send a round downhill w/ out the tap, rack, crap.
peace to all, and your preference's. MY PO6 is 100% reliable and deadly accurate with the CGW works stuff, I would never look back and go backwards just for .22lr priced greater than my centerfire's. now!
cheers
K