i have the rat shack desoldering iron, and desoldering wick. but as far as opening up the via, this was really effective and took way less time. i was able to mod 6 v1, and 10 v2's in about 30min.
i didn't poke the tool all the way through, as i didn't want to start messing with the via. i just needed a hole big enough for the new resistor lead to fit through.
after i put the new resistor on, it was just a matter of touch the spot with a soldering iron, and just barely a bit of more solder, (to flow some of the flux)