For a Floyd set up I just take the thing out and put the strings on it out of the guitar. Then I string it first two strings with one spring adding the others as I go along . I've done this that many times that I can pretty much guess how sharp the strings need to be as I go across the guitar to end up with only a small tweak to the springs and tuning. intonation needs to be one at a time when everything is in place. All adjustments are done without tension and checked with a strobe tuner with the setup done.