Done that in real world on mine XT.
Was not completely exploded like Yours is.
Biggest trouble was to sort out springs,but I managed that somehow.
I cannot help You, but at least You know that it's do-able.
You have all bits, which is good thing! Just don't lose Your springs, because guess what springs do
Good luck!
Peter
well i finally got it all back together, but it doesnt work.
i know its something to do with the springs.
but i really am stuck, i may have to buy another one.