Which example are you looking at? Perhaps you included the "Shared with" amounts to the total, which is actually what a project pays it's dependencies.

Currently there isn't a way to change the weights. For projects like DefinitelyTyped, react, etc, they will have the option to either not claim funds and their allocations will redistributed, or they can elect to have their allocations pass through straight to their dependencies instead.

Lastly there is always the option to create your own explicit set of dependencies you want to fund with a stackaid.json file in your repo