ah I almost had it working after figuring via code how to raise the step motor max current from 1600 to 2000mA, increase something called "current sense resistance" from 100 to 120mA and reducing the max travel speed from 4800 to 2000mm/h via command lines and it spins both motors without skipping
but then found the leadscrews are mounted slightly wonky on the motor shaft making the hot end shake so this design is dead in the water. tis a case of 1step forward 2step backwards, ah well :/
