1973 dart sport help

hey guys need to pick your brains for a few i'm having brake issues on my car and can't seem to figure it out here is my problem i bought new master and booster as one unit for some reason it seems to be tilted down in the front after i installed it not sure if i have something wrong on the install or what.. it was apart when i bought the car i thought it looked pretty straight forward but i guess i was wrong is there supposed to be a spacer on the bottom of the bracket or did i get one that is just screwed up and just fyi i have very little brakes so i'm hoping this is the problem any ideas or photos of how it is supposed to be put together would be greatly appreciated