This was the first year I took my diving board off for the winter. When I tried to take the base of the diving board off I noticed all 5 anchors were rusted almost all the wat through. There doesn't seem to be any problems with the base or the board. My question is can I grind down the existing anchors and put new ones in or do I have to have that piece of cement cut out and repoured with new anchors in the cement? Here is a picture of the anchors.