Andy - I know its a long time ago but did you sort out the brake issue? I have exactly the same problem now after a rebuild. All the parts came with a Paddocks kit so should be compatible but brakes are binding up especially when the wheel is turned backwards both sides! Cheers

Check all 4 propshaft universal joints. Any free play I would replace. Typical prob with the UJs is more obvious under load, when slowing down (perhaps at a gear change) and often smooths out above 40 mph

might try a phone to Weardale Off Road