My sw x4 has a problem Z-axis belt
Whenever I move the crossbar along the z-axis towards a certain point it makes a small "jump" and after a 180° turn of the belt the same thing happens so there's something wrong with the belt that makes the z axis jump. I didn't use my printer for a year now so that's probably also why this happens. Do you have any advice on fixing it and setting up my printer again after a long pause?
Thank you in advance