Horning Eufrodites - help needed with boomy bass

I've stuffed into the ports a couple of polyester pillows I have here under hand.
So far the impressions are that the more stuffed, the better it is for the bass control.
With this understanding, Duke, would you have any fine tuning to make on your recommendations above regarding the material to be used?

How about using better feet for the speakers? There are a few guys that make sort of dedicated such spikes.
Would that add to the gig?

I highly appreciate everybody's help here with bringing me back to enjoying my system.

Amuseb,
It`s good to know that such a simple (and cheap) solution has led to this level of improvement.Turning your speaker into a partially sealed box is obviously effective. I`m glad you can enjoy your system now.
Regards,

Listening along, I find that the stuffing of the ports also takes some good qualities away.
The music is less dynamic, the loss of bass is also making it be missed across the spectrum, overall the sound is more itchy and less musical.
Of course this is just with the two provisional pillows tucked in the cave.
Will check the recommended materials in different configurations to see how they do.
Cheers.

The Horning website is pretty lean of info and pictures. There was a model reviewed on 6 Moons way back and it appears that they have made an attempt to couple the speaker to the floor. You do not want to damp any speaker you want to couple the speaker and provide a specific direction for the resonant energy to travel to ground. In this case the floor. If you impede the flow of energy from the cabinet it will sound different and most likely worse.

You may have an EF5 tornado in a box and your room. The energy is trapped and is trying to make it's way out and you will not be able to stop that energy that you paid thousands for. Why would you want to do that? The end result should be to make a funnel cloud of that 2 mile wide tornado and channel that energy to earth because that is what it is trying to do now. You do not want to stop that flow but to steer that energy full speed ahead to ground. Make use of all that energy make it work to your advantage make it work in one direction. I hope these concepts are of some help.

I myself design and build products that enhance the mechanical grounding of musical instruments that touch the floor. I am also a member of a company that designs, builds and sells similar technology for home and commercial audio products. Tom

Yeah Tom, I figured you had something to offer in this domain.
Where can I see some more details of it?
Thanks.