UPDATE 3:
It worked!
Here's a breakdown of the process since the last update:
11/25 - added LAB to the MLF batch.
11/29 - Took SG readings on both batches: Control - .996, MLF - 1.002
11/30 - Took SG readings on both batches: Control - .994, MLF - .996.
I also took malic acid readings from...