Changing from BB5s to BB7s?

[Globalti]

Thanks, mine are as set up by the manufacturer although I have changed the calipers.. At the moment the un-polished area of the disc is huge, around 70% of the available surface is still covered in fingerprints and marks so I know my pads aren't flat on the discs. This certainly accounts for the squealing. Will have another go at setting them this weekend then ride hard down a steep hill.