Tokico strut/ springinstall question

Ok well while I have my whole rear end out off the car I decided to install my tokico springs and struts. I only have a few questions. In blues writeup I noticed a rubber space between the top spring perch and the upper strut insulator. I did not notice the rubber spacer he mentioned unless it was jammed up in the insulator. My question is does the 240 have this part like the 280 does? Also my rear suspension is still attached to the diff as I removed it all in one piece and it is sitting on a table. When I tightened everything up it was still loose like the fronts were in blues write up. Are they loose because the cars weight is not on them or because I am missing the spacer or a combination of both? any tips on a picture by picture write up of 240z specific nature would be awesome. thanks in advance.