Are you sure you've fixed the brakes? Sticking pads is only a possibility but worth checking as it would be an easy fix. Sticking pistons is probably more likely but harder to sort out - still not rocket science though.
here is what i did, removed the callipers. looked at the pots, pressed the lever, some moved a lot, and some did not as much, so i got a piece of wood, shoved it in between the pots, nudged them apart, pressed the lever until they crushed the wood, nudged the pots back again, pressed the lever, and i repeated the process a few times. Now, all pistons move smoothly and evenly, and i did not need to replace pot seals.
Right just to be clear there are two bearings in the front wheel. You need to change both. No one mentioned the rear wheel.
it may be better to leave it at the garage and let them sort it should not be more than a hour and a 1/2 work and every body on the road would be lot safer
im having a slight trouble getting the bearings out. i was told to use a long screw driver from the other end, well there is a massive cylindrical spacer between the two bearings and there is no way to get a "grab" if you will, on them bearings...
stick yer finger in. can you feel an edge? thats what your aiming for. go in at an angle if you know what i mean.
oh, well yeah ive stuck my fingers in, a little lubed up in there as well. but when i insert, it just slides off the edges as soon as i tap hard..i cant seem to get a grip on it.
use an old screwdriver but with a good edge on it (not sharp) put a slight kink init it will grip easier
