You can manually change the GRBL settings for the larger size. It will be helpful to understand what the settings do. This is a good resource.
GRBL_Settings_Pocket_Guide_Rev_B.pdf (diymachining.com)
To make the settings change, this is the procedure I share:
Calibrating my X-carve 1000 - X-Carve - Inventables Community Forum
If you can get to your settings, post them here and people can take a peak and be more helpful.
#130,$131, and $132 may need to be altered, and then there are the solf limits, and home switch business to take a look at.