One question. I’ve been considering the Isoacoustics Gaia or pucks. My speakers are on a hardwood floor, currently resting on the included spikes.
Definitely give the GAIAs a try, especially since your speakers are spiked onto hardwood flooring.
I know that these products probably won’t impact the treble but may tighten up the bass.
I have a feeling you will be surprised at how much of an impact they will have. Isoacoustics offers return privileges via it's dealers, if you don't find them helpful.