dsoe any one know how to put a starter back in one peace

i didn't need to take it apart but i toke it apart and i try'd to put it back but its like hiting something.

i really dont know how to telll it but its apart its like a big sliver round thing that goes in side the starter wont go in its spot?

its for a d15b2 eninge dx trany not sure waht else your going to need to know

their are brushes"magnets" on the inside of the case that need to be compressed so the bearing will slide all the way in. Its not easy