My tandem axle trailer has trailer brakes. One of the calipers broke off the hub and rotor and sheared the bolt off and destroyed the side of the flange. It was mounted on the rear side of the hub. My question is do I have to replace the flange or can I simply install the caliper on the rotor on the forward side of the hub? Will this fix work or is the caliper designed to be on the rear side of the rotor only? Are there any faults to having it opposite the way it came?