Edelbrock accelerater pump

An someone explain to me the pump system on my 1406. Technically the 1477 kit. All I was able to do was pinch the rubber plunger past the 4 spokes as you might say to swap with the new one in the kit. Used the new check ball and weight as well. I have no pump shot. Only a light dribble. If that really. Unused in the kit is an umbrella looking thing and plastic disc with a hole. Doesn't look like the pump assembly comes apart without possibly breaking the 2 plastic pieces.

It's a used 1406 off craigslist I bought to replace my 4160 for $40 cause the guy switched to a dual feed Holley. I've dipped in carb/ metal cleaner. Barrymans I think. Took the air horn/ top off and nozzle out. Stuck gumout carb cleaner in and sprayed. Bubbled back to the bowl. Pumped by hand and bubbles in the bowl. Put it all back together and pumped by hand. Still nothing. Did I miss something? I replaced every part I took out. The instructions never go into detail on the pump assembly.

I thought I would try an eddy on my eddy manifold and so far, even with this issue, I'm glad. Idles far more even, starts right up.

Thanks in advance!