I have a 1995 77 Series with a 4 inch body lift and ARB suspension. I went to put it through a vehicle inspection here (Mongolia) and they said the rear brakes weren't working. Toyota here told me it was because of the lift, there is a valve connected to the rear brakes which modulates the brakes by how loaded the vehicle is. The lift gives the valve the appearance of being very light. Any solutions to this? What have other people done that have lifted their vehicles?