Hey Cag
Also check the spring tension on the Extractor
Even if the KADET is new, there could be crud hanging it up in the Groove
Your Extractor is a large part of reliable ejection
If your Extractor doesn't provide a strong point for the Case to pivot around, you'll get weak ejection too
Also, are you seeing any resistance in the movement of the Bolt
If your Bolt doesn't have free movement, you'll loose that rearward energy, an see poor ejection too
Just more things to check
BUT..... once you get the KADET dialed-in
Find that "sweet" Ammo
Your KADET will become one of the most fun, and possibly your most accurate Pistol