I have a Shadow 1 Kadet Kit clone, Antreg Zenith 22S which is dimensionally identical to the Kadet 1 Kit fitting CZ75/85 full sized pistols. The only difference between the kits is the magazine. The Antreg Zenith uses polymer, whereas the CZ kit uses steel magazine. Both holds 10 rds. Now, the tricky part. What I've been hearing, as I do not have a Shadow 2 with Kadet Kit, if you change your hammer spring/mainspring to a lower compression rating, say from 15-lbs to 13-lbs and the recoil spring to a similar lower rating (I am not sure of what is factory installed with the gun) you might have misfires as I have multiple of them in both SP01 Shawdoline and 85 Combat. By swapping back the original springs, the misfires I have has gone down to maybe less than 3% of the total round count. Likely ammo related as .22 ammo is notorious for misfires and even sometimes no fire at all. I found Federal 525 and Federal Automatch good. Very few misfires. But surprisingly, Federal/CCI Standard Velocity performs very well. Maybe 1% misfires and groups tighter @ 20m. I find a dedicated Rimfire like Ruger MkIV more accurate than conversion kits. Remember, conversion kits are designed to fit all intended variants. Manufacturing variances might require professional gunsmith service. My kit required minor rotary tool grinding before I was able to fit the slide into the frame. There are tons of information on CZ 75/85 including Shadow 1 & 2. Google it and see what makes sense. Remember, if your are not sure of what to do next, ask the people who knows CZ pistols. We have a few GURUS here who knows CZ 75/85 very well.