Campy grease tends to separate after many years. I have a pair of NR pedals I bought new over 30 years ago. When I put them on a bike last year, they were very stiff. Since they were clean, not rusty and well packed with their original grease, I decided not to repack them. They got free and smooth when I added a little motor oil. I suspect the oil in the original grease evaporated and the oil I added quickly emulsified in whatever exotic wax or fat Campagnolo used in their fragrant grease.