here's a top pic
And no, the top part where i spin in the whammy bar is not loose, it's hard as a rock and in place. (The whammy bar used to be stuck to it, but i got that fixed).
Ok........there is a top nut! It is the thing with two flat sides that you screw the bar into.
Directly opposite this nut, behind the plate of the tremolo, there hopefully will be another two sided nut. The only way to see it is to tilt/divebomb the trem, so yo can see whats going on behind the trem from the front of the guitar.
If you do see two flats on a nut behind the plate, the friction can be adjusted. You will need two wrenches (usually supplied with the guitar) to adjust the friction on the bar.
Turn the top nut clockwise, while turning the bottom nut counter clockwise, simultaneously. The adjustment should be made in very small increments.
As I mentioned, it is much easier do this adjustment during a string change.