Took clippers apart.....

Question

I took them apart to get some excess hair out, in the process I tore off some little foam piece that was in there and everytime I think I may have it right......the blade doesn't work. I need to know the correct method to put them back to gether. I have:1 lg metal grid1 small metal grid2 small screws1 little white plastic piece w/ a slit in it that looks like it may go over the blade????Please help!Thanks,tallcaliguy