so, our rotary airer needed replacing. Hubby attempted to pull it out - and it snapped off below the paving, leaving the bottom section stuck, in what I presume is concrete, below the paving. How difficult would it be to lift the paving, take out the concrete and remains of rotary, and then replace the paving and put in a new rotary, using a spike perhaps?? I don't want wobbly paving, and we have no grass to stick a rotary into, so this wee paving stone with a section cut out for a rotary is it (unless I get washing posts and stick then in the borders??). TIA.