/diy/ - Do It Yourself

Shit guys, I done goofed.

Riding high on the success of flawlessly replacing a toilet fill valve, I tried to replace a tub spout. The old one was stuck in the shower position.

I installed it exactly like how the instructions say, and it works fine... until I pull up the handle. Then all the water comes out of that plastic part behind the actual nozzle, and only a little bit out of the shower (but not at a high enough pressure). What did I do wrong? Or did I buy the wrong thing?