I wish you luck. I did the very same thing to my A, and had your exact problem after putting it back together. I took it apart 3 times, and put it back 3 times. Same thing. I was ready to roll it down a big hill. But, I did it again, figuring it's something simple.
I'm not sure what I did different, but the 4th time everything worked as it should. I would SWEAR I did it the same every time, but apparently not. Just be extra cautious about each and every possible step. It'll fall into line sooner or later.