I've not painted it yet need to find something that won't look out of place. Also need to smooth out the SURGU which has dried now.
SURGU is available on amazon
http://www.amazon.com/Sugru-SBW8-Se...F8&qid=1430806845&sr=8-1&keywords=sugru+white
although this price seems allot you will find it cheaper if you shop around. (certainly in the UK)
The little feet were just the sticky backed foam things you can get from somewhere like Staples (I'm in the UK but am sure they are big in the USA - not sure where your based)
It was a 12mm flat drill bit I used for the hole that made it just big enough for the USB. like the ones in this link:
http://www.amazon.com/Piece-Flat-Wo...430806696&sr=8-12&keywords=12mm+flat+wood+bit
But the amazon ones are expensive if your only using it for this.
Like you say though if your willing to cut and solder the cable you could use a bit of white heat sleeve to cover the join. just measure before cutting to make sure it all seats well.
Photos below. Like I say still some painting and smoothing to do. Im not great at this type of thing but its a very simple modification so can't imagine any one else having any issue.