Yes Jaspert,
The shelf being cantilevered on aluminium brackets from the wall and carrying the weights of both turntables, preamp,tuner,tape deck,DVD, VCR and Plasma TV slopes in all directions?
That's why there are solid spacers under the adjustable Stillpoints of the Raven as well as under all 9 feet of the motors. And that's also why each arm-pod surrounding the TT-81 has 3 adjustable levelling spikes.
Life as an audiophile wasn't meant to be easy?