I assume you mean Magnetosphere Charger when you say dark drop? I find it curious that the 4th one works. The 3rd puts you at 3493.

I say that as I am stuck at 3080 on one of my planets and it won't let me use anymore Interspacial Fold Generators even though it is below the 3100 cap.

That one doesn't actually say it has a 3100 cap, so the cap is probably 3000, which means you can use it if the cloak is 3000 or less.

All of my planets max out at 3100 cloak using Interspacial Fold Generators alone. (It might be the 1000 vs 1050 that we see on passive attack arties but I've never had one NOT to go 3100).

Yeah, that's what I said. It has a cap of 3000, so if it's 3000 or less you can use one. If it's 3000 and use one then you get 3100.

+1 to this

Inverse-Flux Satellite , replace one with 2 Resonance Inhibitors, 2 Quantum Accelerators (AP) , which gives you the same +800 cloak but then you have +4 AP and one other space for an AP building (so likely, +5 AP). This will yield about 47 AP total and is > 10% better yield. You will need a lot of dark badges tho to do that and the passive cloak.