So basically, you'd like the old grid as an option. Right?
Yes, i find the old grid and monoscope much more reliable in terms of calibrating the screen borders and also linearity.
Please use thkis and compare it yourself, best regardshttps://drive.google.com/file/d/1a-MgterstONwP40fWSYhOqSp797LsPp3/view?usp=shari...
