Hello....Well I tried to rebuild my rochester 1 barrel on my 40 chevy 216....Well I took the 2 haves apart and 2 balls (1 smaller than the other) fell out. I know one of them went to the Main Well Housing, I think (the smaller one, with the smaller cap), and the other I dont know where it came from. I want to assume it goes at the end of the power valve piston, but I dont know. My instructions I got with the kit are hard to tell from the diagram. In any event I have to of the check balls and dont know where they go. Any help is appreciated. Thanks!