Hello everyone. I am new to this site and this is my first post. I have an inground pool, and I want to put a safety cover over it this winter. I have a ladder that is in the concrete with a bolt beside it. I found out last night that this is a wedge system. I also found out that you should loosen the bolt about 3/4" and then tap it back down to release the wedge. My problem is that when I try to tap it back down, it doesn't go back down. I even bent one of the bolts trying to get it back down. This ladder hasn't been removed since I have lived at my house (7 years) and I don't know how old the pool is or if it was ever removed. My question is how can I get the wedges to release? I am sure something is corroded since they have never been removed. My initial thought was to stick a sturdy screwdriver down the bolt hole and tap it with a hammer, but I don't know if this will damage the wedge. Any help on this would be greatly appreciated!