That's terrific! I am very happy for you. I for one wonder how adding the ADA changed the radiation pattern for the M100s. I'd have to think about why you had to move them closer to the side walls, further in to your room and at a wider angle. Perhaps moving them into the room suggests the bass response has increased which would certainly make sense at higher volumes.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated