Using Maple Butcher Block Under a Turntable

there are footers that came with my butcher block audio shelf that are rubber and cork.  they seem to work really well

I got my butcher block from Butcher Block Acoustics the other day. It took about 6 weeks because I had mine done at a custom size to fit my Solidsteel WS-5 wall shelf. It came with cork/rubber pads for feet, which I am using to support the block on the shelf. For the turntable I have changed out the spikes on the feet for a set of isoAcoustics Gaia III feet (normally used for speakers, and I have the Gaia II on my Dyn C2s). It looks and works great. I am going to try out some HRS Nimbus pucks instead of the provided cork/rubber feet to see if that makes a difference.
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With regards to the maple from Mapleshade or Butcher Block Acoustics is this hard Maple or soft Maple?  If its soft Maple it is not as dense as Cherry or Black Walnut.  Hard Maple is very hard and I would imagine its resonance is at a higher frequency than any of the other three I mentioned.  

I googled Mapleshade and they use ambrosia maple which is any maple that has been infested with the ambrosia beetle. I don't know what exactly the type of maple they use and maples on the Janka scale vary quite a bit. So just guessing which maple, just look at what type of maple grows in Penn Amish country.

Brown maple is prevalent in Amish country with a hardness of 950 on the Banks scale which can go from 350 up to 4380. Its a soft maple from a quick look and guess on the world wide web