TOPIC:

I notice that if I examine the DDRC-88D with the DDRC-88-BM tool, it shows me the delays configured on each channel. It seems to have applied 0.13ms on the front left vs 0ms on the front right and 4.88 on the rear left vs 5.08ms on the rear right. This is after the full suite of measurements took place. The end result seems to be messing up imaging. Can I manually adjust those delays?

I believe it's the first measurement that sets the delays. You could try using a tape measure to set the exact position of the microphone for that first measurement.
Or, you could add delays on the output channels to get them to match.

How do I add delays to the output channels? There seems to be no way to modify anything in the DDRC-88-BM tool. Connect, Config1/2/3/4 and Dirac Live On/Off seem the only things that are clickable.

I'm not really following, if you go to the Outputs tab, the delay setting is near the bottom of each channel.

It's greyed out. The only tab that is not is the Dirac tab.

Ohhhh... right. Then I think you don't have the BM feature enabled. Sorry, I forgot that there is a "no BM" mode