These replies were originally posted by me @ http://www.daddydoodle.com
They are totally relevant to this thread

1) Tuning the beast

The FRs are a floating trem system i.e. the bridge is kept in place by tension on the strings acting antagonistically against the tension generated by the springs attached to your bridge in the back of the guitar. So, when you change the tension on the bridge by alerting the tuning of one string the tuning of all the other strings changes also.

The way round this problem is to undo your locking nut and adjust all of your bridge fine tuners to about the half-way position. Then tune your bottom e string to pitch. Work up to the top e string and then go back to the bottom e and again tune to pitch. After you have repeated this exercise several times you will notice that the amount of tightening required to tune your e string to pitch is decreasing every time you go back to it. Keep at it and eventually you will get to a point where after you have tuned your top e, your bottom e will still be in tune. Do up the locking nut and use the fine tunes to tune to pitch. I normally do some serious bending and diving just to stretch in the strings, retune to pitch as call that done !

A helpful thing is also to make a bridge jack. I have one that is made from a dead 9V stomp box battery wrapped in electricians tape. When ever I want to change my strings and give my neck a good oiling I jam the battery under the bridge to stop it disappearing into the body as the tension from the strings disappears.

2) Bridge riding out of cavity

The fix for the bridge riding out of its mounting cavity (raising the action) is a simple but time consuming one.

Undo the panel on the back of your guitar and tighten (to drop your action) the screws on the mounting plate attaching the springs to the body of your guitar. You will then have to tune to pitch as described in the previous message before you see what difference you have made to the final position of the bridge. Then... either tighten the spring mount further to lower the action and bridge or loosen the mounting to rise the bridge, tuning to pitch to check your progress. This will take a couple of hours to finally get right but once it is done, as long as you don’t change the gauge of your strings again, you are set !

Hope this helps