Originally Posted by
AdventureManCO
About 15min in, I moved it to the vise and tried some gentle/moderate twist action.
Throw the gentle twisting out the window. Put the post in the vise, grab the seattube with one hand to steady the frame, the other on the headtube, and alternate pushing and pulling like an absolute madman.
Also, make sure to lubricate
through the bottom bracket inverted. Trying to lubricate through the top isn't going to work; capillary action isn't going to pull it into the gap if/when it pops free.
-Kurt