Hinges on x230 very stiff

[thinksnake]

Hello my thinkhead, first time posting here.

Found myself a fully working x230 from my local e-dumpster with only a dead battery and no hard disk.
Cosmetically it looks fine, but the henges are so stiff that opening it is like that one scene in King Kong where Kong was trying to open the jaw of the T. rex.

There are no signs of rust or anything that could be doing this, so any advice would be nice.