We recently moved in to a house and hope to make some improvements to the kitchen. At present there are granite worktops and upstands, but horrible tiles which go behind the upstands (so upstands sit forward of the wall). We want to get rid of the tiles. Our plan is to remove the upstands and then tile down to the work-surface (without replacing upstands). Is it possible to remove the upsands without damaging the existing work-surface, and will it be possible to remove the mastic/glue from the worksurface so that it looks ok? Thanks.