I need to go through the set up procedure on my old Roksan Xerxes but can't see how the three rubber suspension blobs are meant to fit together. The set up manual shows the big decoupling blob with another washer and grommet assembly on top of that. It looks like the washer should be below the grommet but that was not true for the two blobs at the front of my deck - the washer was on the top. There is also a nut on the top section but it is difficult to see how to set it up such that the top grommet is any part of the suspension isolation system if the top of the screw thread gets in contact with the top of the plinth. And no, I'm not rushing out to spend 200 quid on the upgraded versions.