M/C and booster angle

[65chevysub]

I've been noticing that most of your trucks have the M/C and booster pretty much level. Ever since I installed my Master Power Brakes kit, mine seems to be angled too high. Does it look like it isn't made right? Any help would be greatly appreciated. Also, sometimes I really have to stand on the brakes to stop. I know this isn't right and am wondering if the angle of my setup has anything to do with this. I've bled the brakes, and still it does it.