I am new to CNC and am almost done assembling my S4 XXL. On my machine, there is some rubbing/resistance on both of the Y-Axis belts, as well as the X-Axis belt. This is both in the way it feels when the gantry is moved manually and clearly heard when it is moved. I have not powered on the machine yet. I have tried to tweak them tighter or looser to see if that solves the problem, but no luck. I did schedule an onboarding video call with Carbide 3D for late next week, but I was hoping to solve the issue beforehand and focus on other basic functions. Thanks for any advice you all are able to provide!