Lowrider V3 gantry Y axis endstop removal and table auto square for dule pole setups

If your table is Square and you're running two pols for the Y axis, mount the pole flush to the print and the print flush to the table. Mount one pole bracket, push the cnc gantry up/down the entire length aligning pols parallel.  Return to original position and mount the other side pole bracket keeping it flush to the table. Move the gantry up/down the entire lengths again. Return to the pole bracket below the one just mounted and mount both sides.  Roll the gantry up/down again and repeat the process.  All the while make sure the gantry doesn't bind or lift off the pols. When all pole brackets have been mounted apply a final tighten and assure the gantry still travels along the pols smoothly one more time.