Lithium grease spray is not great for loosening or penetrating. Its good for lubrication and rust prevention. It will actually dry up before it penetrates.
Kroil (prefered) or PB Blaster will do a much better job.
https://www.kroil.com/product/kroil-...rokroil-ks102/
Once you get the proper penetrant, use your long screw driver or coat hanger and place tip near the area you want to soak.
Then carefully spray enough fluid on the rod to let fluid flow down into area that is not accesible. Good luck.
