i wonder about the uses of stepper ,the different price from stepper to close loop stepper its very low ( i think bater use servo) but at least
why not use the close loop ? i see here so many complain on problems i never had ,like loose position

I completely agree - but when I bought the machine it came with these steppers in place.
For the A-axis I built, I used a servo and I like it a lot more than the steppers.  So over time, if the steppers fail, I will replace with servos.

if you have one axiss servo then it can answer yours question,you can check if you have such error also on A
if not then you get the exactly answer