#2
Noooooooooo. The trem screws are in the center back of the guitar. You'll probably have to remove a cover to get at them.
I will show you something different from either
Your shadow in the morning striding behind you
Or your shadow at evening rising to meet you
I will show you fear in a handful of dust
#3
No I know about those
but sometimes people say/i've read that you need to put a sticker over the hole if you don't use the tremolo cuz the spring will fall out..

obviously those ones in the back won't
#4
Oh. Well I've never heard of that, and I doubt it's true. I might be wrong though.
I will show you something different from either
Your shadow in the morning striding behind you
Or your shadow at evening rising to meet you
I will show you fear in a handful of dust