Model Sufficiently Supported. Oh yeah?!

I keep getting a flag pop up when in Edit Supports mode, that says Model Sufficiently Supported, , The models you are editing appear to be sufficiently supported, and I CAN’T edit the supports any more!!

Excuse me, PreForm, I think I will be the judge of that!

Any ideas? PreForm 3.5.2, FormLabs 2, Grey v4

Is there a way around this “Model Sufficiently Supported”? My print if failing in multiple configurations and I need to add supports but it won’t let me.
Thanks