I have been trying to get a manual (owners or repair) for my X90 but until I do I have to ask here. The X90 is different enough from the Tracker that I can't look some things up in the manual I have ( Haynes is not usually any help for either). I lifted the X90 on a 2 post hoist and went to spin the tires but, although the rear were free, the fronts were locked. Front drive lines were free so it had to be brakes. Started the car in 4x4 and when I let out the clutch there was a thunk as the brakes let go. Now they spin freely. Is it a hill hold or a brake problem?