You might try out some DIY roller blocks. I'm using them between DAC and wood plinth. Between plinth and equipment console shelf, am using 3 cork & rubber Isol-Pads.
When you say, you have tried Vibrapods, do mean the soft rubber Vibrapod footers? The Vibrapod Cones have seemed more effective to me (even used alone) than the footers.
When you say, you have tried Vibrapods, do mean the soft rubber Vibrapod footers? The Vibrapod Cones have seemed more effective to me (even used alone) than the footers.