Pre-upgrade (to  19.1.9661) we were able to set a default micrograph size in config.php

ie: 

$config['frontpage']['micrograph_settings']['width'] = 250;
$config['frontpage']['micrograph_settings']['height'] = 100;

Post upgrade, that value doesn't seem to be used anymore.  Is there a way to set the default size of the micro graphs in the config?  I know I can use the GUI to edit each individual graph, but I'd like to be able to just do it once and have them all the same size.  Unless I'm missing something....