New LP12, I like some things and some I don't.

I don't know if this will solve your "problem", but I got good results from using Mapleshade's rubber/cork/rubber footers under their 2-inch maple with 3 triple-point brass cones under my Lingo 1(those triple-points are a pain to set up). I no longer desire a Lingo 2. I also believe the current Linn mat is much better than the old(circa 1992) mat. If you were using an Archiv, I would recommend their Linto step-up(soon to try reference points under, with the maple and r/c/r footers). I use a Mana Reference Table with the bottom plate removed from the Linn, but I have heard that a wall shelf is almost optimal. I have read that some people prefer pre-cirkus. Probably putting the r/c/r footers and Mapleshade's 2-inch maple under the Linn would eliminate the midrange problem, and I did that to good effect on an Ariston RD110, but it might diminish some of the qualities that you bought the Linn for.

Hello, you also may want to check to make sure things aren't overtightened, especially the strap that mounts the power supply board. LP12s, like any other 'table, sound like bad digital when overtightened. BTW, overtightening causes the top plate to rattle and that is why Linn added the corner bolt to the top plate.

You may want to have the Ekos looked at as well. The early examples are notorious for having some bearing issues that can definitely affect the sound. Have a dealer give it a once over,