LitterBug, I think I see what you mean. Although I believe the 3v pad is actually a rectangle and not a square. So it's not touching the neighboring 5v. Is that what you mean?
Or wait no, you're saying there's another pad under the 5v pad ... and I need to solder that away then bridge center to the 3v.
And so would that mean I need to solder the RX wire back with the other wires. Because I soldered it directly to the 3v pad...
*UART 3
You can probably get away with soldering directly to that tab as well.