Help with EagleTree connection?

[simplechamp]

I tried my EagleTree for the first time today, and when I was connecting it things seemed right, but when I got home and looked at the data and looked at the wiring again something obviously isn't.

I run a dual 2S saddle pack setup, and I made the series connector built into the leads on the MMP. I thought I could still connect the EagleTree with this setup, but it only logged one 2S pack's voltage.

You can see the pic of how I connected it. Max current was about 86A and max power was just above 600W which would mean a voltage of about 7V under load (this matches what the logger recorded as the low pack voltage). The buggy seemed to be doing full speed and power though as if it was running on 14.8V. Was the EagleTree just reading improperly because how I had it connected? Because both packs were at the same voltage after the run and took the same mah to recharge, just as if it was a normal run on 4S.

What do I need to do to connect the logger correctly? Do I have to put the EagleTree before the series adapter?