im going to be installing my k-sport springs and d-spec struts this week and i was searching around on for install info and i saw a post that said you need to put washers between the mount and top nut. also when i mocked up my set-up i noticed that the spring is shorter than the top of the strut.

so here are my questions:

how many washer would you need?

and how would you keep pressure on the spring doesn't there need to be pressure on the mount?
thanks