Your screws seems backed off a little too much. Screw them in so they grab the plate, back them out a quarter turn.
You can try back out the middle four screws a little more so you got a sort of 2-point trem. see if that helps
Eventualy loosen all string and re-setup the tremolo. Keep it loose. take springs off so it lies free. Then screw in the screws. when the tremolo plate lifts up as you screw down, back off until it touches down flat and back off a quarter turn more. Repeat on all the remaining 5 screws. In a floating setting, You should be able to do a pull-back on the trem all the way until it stops. When you hold it decked, the neckplate should just kiss the screw heads.