Over-riding default monitor selection

This is just a picky QOL problem I am having.
I would like to have it so that when I build a new experiment, the default monitor selection is not “testMonitor” and is instead the monitor I created in the monitor centre. I have tried deleting the “testmonitor”, but it still appears as the default, and changing the default values for it won’t stick. I don’t see a setting for it in any of the preferences settings. Is there a config file I can change?

Issac