The second go of the Moe was a success. I sat on an even 2 minute pace per lap for 36 kms (3 hrs) as planned. No nausea this time around - the conditions (temp, wind) were the same as last time, so having the right level of fuel (not 4x) was a good thing. Have to watch my hydration, though, as I lost over 1 kg (2% of my body weight) and that's not a good thing. Notably, my Garmin gave me the bonus 1.5 kms again.
Now I can put tracks out of my mind for a month, do a little more speed work, enjoy some single track, and count down days (26) until the real 6 hr event.