Brake Cam Lever. cotter pins & bushes

[seajayare]

Are there any tricks to getting the cotter pins out of the brake cam levers? I can't even get a good swing at mine because of the bodywork! If I do manage to get the cams and levers apart is the bush a straightforward thing to replace or do you need a press and reaming tools? If you can't replace the bushes with the axle in place I don't think I will bother taking the cotter pins out!