XYZ – Belt Tensioning
App for tuning:
I use this app for tuning the belts:
Try using the note A1to B1 as a start and tension from there. Remember that too tens belts are worse than loose
Try to get both sides same note but it is more important that the X axis is perpendicular to the Y rails!
Play on the long stretch with bed all up and go for D#2 on both sides