4. Re-flux the pads, and now place a drop of paste on the center ground plane. Stick that QFN in place (it should stick to the paste and remain in place until the paste melts -datrick!)
Ahh HA! I knew there had to be a trick to it. I've previously tried tinning the pads with my iron, applying paste flux, and hitting it with the hot air gun (er... it's a real rework station, not a heat gun like you'd use to strip paint) but I haven't tried using solder paste...

I'll have to give it a try again sometime... thanks!

I wouldn't use regular DMM probes for something that small... I'd either be trying to hit it with my o-scope; or I'd use super-sharp DMM probes. However, for most of the kinds of stuff I'd be probing that was in a QFN package; I'd probably be more interested in the waveform anyway, so it'd probably be o-scope probes... and if possible, I would have designed in test points or a connector.