Tip picked up from the internet that worked for me. If they don't become smooth with use. Resist the urge to add oil as it reduces friction and you want friction for the metal to wear smooth. Clean out any oil in the pivot with soap/water. Add a little compound or metal polish. Anything with a little grit in it designed to clean or polish metal and then sit in front of the TV opening and closing the pliers until they feel good. Clean out and oil.