New struts for sure. Im having the same problem, especially in the cooler weather.
One note for safety......
These struts can kill. Not saying it WILL happen, but the potential IS there. Being fire/rescue trained on jaws of life, part of our training is just about the rods from these units. Whether in the trunk, hood, or b-pillar areas(they are attached to the seat belt restraint system and fire down to tighten the seatbelt during impact) we are taught to respect them. There have been cases where they separated and the rods(shiny part) shot completely through firemen. Now I'm not saying you will be cutting into them with a Hurst tool, but neglecting them until they have deteriorated may cause them to become compromised and separate when removing. They can be under extreme pressure, and even though they can no longer support the lid doesn't mean they can't hurt. Not many people are aware of this so just wanted to pass it along. Stay safe.