Putting fuel pump together order

[jimmyzshack]

i have two fuel pump kits for this carb and they both have an additional part that is not in the book or on line in a diagram. Anyone know what order they are suppose to go in. Main question is about 3 and 4 in the picture.

This is a part listing just like the one in my seloc book.
http://www.dougrussell.com/partscat...,7,13,2,9,8,11,16,6,14,15,5,0,19,3,10,12,17,4
thanks