Part 2:
decided to complete the cz40b kadet kit answer here as it was originally started here. (by the way,, cz40B's are awesome!)
so: after much looking/examining the kadet kit on my cz40b.. i finally found what was keeping it from originally sliding back far enought to cock the hammer... no longer an issue.. i was actually getting ready to go shoot the kadet kit on the 40B when i discovered the real reason the kadet kit won't function as is on the 40B.
with a magazine in place you cannot retract the slide far enough to grab the next round.
i don't have my camera and not quite sure how to 'explain' but will do my best.. actually it the kadet kit could work IF someone basically cut down the spring guide rail apx. .250" off the back side thereby allowing the slide itself to retract fully and allow it to pick up a round from the magazine. or perhaps even cutting the spring guide off completely and fitting a new smaller dia. guide in the larger main upper slide dia. to contain the spring.
seeing how i don't have the extra parts or a second kadet kit.. i will not be trying it. but it sure appears it could work if someone really wanted to put one on a cz40B.
so there you have it. if I had an extra kadet kit,, i'd try it and have a dedicated kit to go with my cz40b. sure looks cool, feels awesome.
let us know if someone tries it!