75 Compact (Decocker) has no spring slots in cage??

[Slackdaddy]

Try to reassemble my sear cage on 75 compact de-cocker.
My sear cage does not resemble the sear cage in ANY picture or video about re-assembling the 75 decocker sear cage.
The are no slots for the spring tails in the large flat area of the cage?

Should I grind a slot with the dremmel ?

[SI VIS PACEM PARRABELLUM]

If this gun was assembled and functioning before you took it apart WHY would you go at it with a Dremel which by the way is not a gunsmithing tool? Put the cage back together as it was and test function from there.
By the way what is the production date of this pistol? I've been into several late model sear cages recently and not had any issue getting them apart or back together.

[Slackdaddy]

This was an ex service piece I picked up, don't know the date.
I am doing/did a complete tear down, clean/polish and CGW upgrade of some critical parts.
I did not have any issues re-assembling the sear cage and installing it.  I had a decent slave pin.
I do use a dremel for a lot of "smithing" ,, mostly with buffing wheels and compound. The dremel is a tool, it is only as good as the person using (or mis using it).

I was curious for the reason that CZ added the spring leg retention slots in the cage, at some point in production.

[SI VIS PACEM PARRABELLUM]

This was an ex service piece I picked up, don't know the date.
I am doing/did a complete tear down, clean/polish and CGW upgrade of some critical parts.
I did not have any issues re-assembling the sear cage and installing it.  I had a decent slave pin.
I do use a dremel for a lot of "smithing" ,, mostly with buffing wheels and compound. The dremel is a tool, it is only as good as the person using (or mis using it).

I was curious for the reason that CZ added the spring leg retention slots in the cage, at some point in production.

That's not the way you posed the question in the first post. You say you're trying to Reassemble the sear cage and there are not slots which makes it sound as though you're having difficulty with it. Knowing it was an OLD gun not a new model would have been helpful as well. I don't know when the change was made but CZ's I have as far back as 1997 have the slots so the change came before that I would guess.
 Maybe they noticed the spring walking back and forth on some guns? Some other reason? Maybe having the slot helps reduce the decocker lever walking around since the spring leg helps hold that in place? Not sure if CZ-USA would have a definitive answer or not. Might be a question for the factory if you could get in contact with them.
At any rate if the gun functions as it should I don't think I'd be concerned about it.

[Slackdaddy]

I'm not gonna sweat it.