Unscrew the back of the Cen-Tech scale, then remove and save the screws holding the force beam. Carefully cut away the hot glue over the battery and force beam wires, and use wire cutters to cut an opening through the side of the case big enough to pull the beam through, keeping its wires intact. Use a Dremel to cut the frame above the display, not too deep, and toss the excess. Also cut off the battery compartment; I lengthened the power wires for more mounting options and duct-taped them down later for strain relief.
Cut a wood block about 1"×2"×½" and mount the force beam to this block, using the saved screws. Now, the critical part: lean the stand back slightly and position the force beam block on the base such that the spacer just touches the force beam near the sticker that says “500g.” Hold the block in place, power up the scale, and confirm that it responds correctly before screwing the block to the base board. If the scale reads negative values, flip the beam around.