I highly recoomend installing belts and conversiont to ONStep.
I did it on
both my mounts. it is not hard to do and it is not costly, if ytou do it yourself with components from ebay (used for 3D printers. .that is why they are so cheap).
(please note, the link is not current - in the latest version, I do not have any gears, I am using 400s/rev steppers and 1:5 timing belt pulleys. I am still trying to locate my post with curent version).