What I've noticed you're using components (Gross Revenue, GPO, etc.) as list members with Rebate $ as line item. You should consider creating module with those components as line items (see screen below). This module doesn't have any other dimmensions. In your case you should replicate all additional dimmensions (Time, Versions, Lists) from original module.
All items displayed in black are simple sums of proper items. Net1 = Gross Revenue + GPO + Fed
Net2 = Net1 + Medicaid
Now marking single column from Gross to Net Revenue and selecting waterfall chart should create below chart.Hope that will provide help you needed.