[jello1717]

Maybe this is a playbook issue or something. I use a CPB that I always use every year w/o adding/removing formations.

Do you guys perhaps change your playbooks and/or add remove/formations (I'd guess specifically remove them)? Maybe you have formation A and have some subs for it. Then you change playbooks and you don't have formation A anymore. Then when you try to reset the subs, maybe the game can't find formation A anymore so it can't "remove" those formations subs so you're stuck with them.

If that's the case, then it seems like you could run out of formation subs if you keep removing formations before you reset your subs for them.

Obviously this is just a theory and if you always have the same PBs, then it doesn't apply anyway.