Trailer brake help needed please - Extreme Trailer

Hey guys,

Looking for some help on how the brakes are put together on a trailer. I have a 2008 Extreme tandem axle trailer under my Malibu - disc brakes on the front axle only. It has normal surge brakes. It seems like one caliper perhaps siezed up or something on the last trip out.. not sure if the caliper is ok but I haven't got that far yet.

I took the brakes apart on the one side and the pads are of course cooked and have caused huge grooves in the rotor, so it all needs replacing. I took the entire caliper assembly apart and tried to get the rotors off, but it appears they are attached to the hubs and don't come off as their own unit.. or if they do I have no idea how. There is a rubber boot type thing in between the hub and the rotor but not sure how they are connected or if its a solid unit.

Anyways... 1) how do I take the hub off/apart and b) any idea if the rotors/hubs are generic to all trailers or do I have to phone Extreme and next day air a part out to me? I know the pads are from a Kia Sofia. Road trip this weekend so need to make sure I'm going to get there!!

Thanks all..