I found the hardest part was removing the resin they use, A dremel works well with the right reaming/filing tool and a small tip solder iron to melt it a little.
I then replaced the whole case with the carbon fiber look and filled it with shoe goo, silicone will work as well.
I then printed out the number on a label maker and stuck the number on the sides and front then covered those with shoe goo.
Its never missed a beat and I lengthened the wires in the process
There is no hole for the LED so that had to be drilled and protected with SG
Id do it for you but Im sure you can find someone locally