Brake Calipers and pads burnt on toad

Make sure that there is no pressure on the pedal when not activated. Need some clearance. It is recommended to pump the pedal a few times while setting up to bleed out power vacuum. If vehicle is started after set up it will again need to have vacuum bled out by pumping pedal.

Sounds as if you have rear drum brakes and front disk.

I use a bungee cord to strap Brake Buddy to seat frame to keep it from moving around during travel...especially on rough roads.