Domino throttle use variable pot resistors meaning that you wipe from 0 - 5V.
Most throttles use hall sensors which wipe from 1 - 4V.
Most controller are configured for hall sensors so won't respond between 0-1V and will cutoff over 4V for safety purposes.
So you have 3 options:
1) Easiest: Buy new hall-based throttle and sell Domino Throttle
2) Hardest: Use a couple of resistors to remap the 0-5V to 1-4V Search throttle remapping on ES User teklektik provided a excel tool to help figure out the resistors.
3) Most expensive . Get an CA3 that will interface between throttle and controller and will do the mapping for you