[HayZee518]

use a small chisel and whang away at the concrete. it looks loose enough for it to come right out. sweep out the joints and use the mix I stated above. Now for those overhangs -- Easiest way I know of to shorten the overhangs would be to rent a concrete saw with a diamond blade. there's a water hose connection you'll need for the saw. Don't go right even with the riser stone leave about a 1/2 inch protruding that way when someone steps on the nose of it the way it is now - the whole stone won't lift up.