Glassbed Corner Brackets for FlashForge Dreamer for 3mm Plates (flat)

Because the original print plate of the FIashForge Dreamer is an additional thermal resistance between the heat bed an the glass plate I removed it to decrease the temperature difference between measured (and controlled) temperature of the heat bed and the real temperature of the glass plate.
But now the original brackets were a little bit too high sometimes causing a collision between the nozzles and the brackets.
So I reduced the height of the brackets to let them fit again.