Dumped the rack


So I have a steel spiked Sound Organization table about 2 feet tall. On it rests a 3" maple butcher block. On that rests my slate Garrard 401 with slate feet and aluminum cones.
I had a piece of granite made and installed it on the maple beneath the turntable. Man, that sounded bad. Silvery colored and dull. I reversed the layer order and put the granite below the maple. That sounded a lot better. But not as good as when there was no granite. So I took it back out. Okay back to how it was. But something was missing. The granite did bring a feeling of stability to the image. What to do? I took the whole rack thing out of the equation and put the 401 on the concrete floor along with the preamp. This sounded best notwithstanding the wooden tone lost by removal of the maple. But the best thing, and I’m aware of the effect from reading but never tried it, was that imaging has improved by quite a margin. Like removing a veil of something. Like when someone moves their head out of your face at a concert. Now, I have to bend down to play records. 
128x128noromance
No problem. One or two springs can be moved a bit manually to distribute the load uniformly and obtain absolute level of the platter. This is also an issue for many amps that have one or two large transformers on one side.
Or...you can have a base platform that receives the springs, have it's own leveling feet.
But in that case the system would behave non-uniformly due to unequal loads on the springs. Ideally, when you push the top plate up and down you want to see smooth vertical up and down motion. With unequal loading on the springs the motion up and down cannot be smooth, it will be wobbly, diminishing isolation effectiveness.
Update. I couldn’t handle the floor. So I stood four concrete 16×8×4" blocks on their short end. Drilled 4 holes on the 3" maple butcher block. Screwed in 4 brass domehead bolts. Rested maple on blocks -boltheads down. Adjusted bolts so it was level. Installed slate 401 on top of this. Solid and stable.

I have removed my rack. All sits on the floor on platforms.

Bare spring is not the best idea. You need to kill spring swings like Townshend does with applied rubber. The spring itself is a piece of metal and while it will isolate from seismic vibrations it will transmit micro vibrations through.