Tom designed the Barefoots with vibration cancellation in mind & they are strongly braced. So, i don't think they would create that resonance you are talking about. Or you would have noticed it when switching between the ADAMs & the mm27s.
I'm afraid of the Argosy desk & had some similar problems with their products. They was reacting like resonance boxes near the main speakers. In that case, even the Recoil Stabs won't help as it's a matter of angle & distance.
There is a very simple way to find out, just move the monitors from the desk to sides. We don't care if they are symetric or not for the test, but just to see in it's solving the problem.
Here is a pic of Seti's Studio & the stands he made for the same mm27s, just to show you what i mean:
It's very hard to help you not having more infos bro and all these are just guesses. All i wish is that the problem is not coming from the floating floor as we already talked about.
Wish you the best of luck.