I bought the Parf Guide system and have used it so far to create one workbench top. I love the system. Unfortunately, my drill fell and the 3mm bit broke. I was able to remove the remainder of the bit from the holder (which works with the drill guide), but the holder doesn’t seem to accept a generic 3mm bit, which will I can’t insert more than about 10mm into the holder. Unfortunately, while I see some of the Parf Guide parts offered separately, I haven’t found this bit or even the bit and holder combo offered separately. So how can I replace this simple part?