Have you greased it?
Yeah, I've tried to clean/oil the inside of the tube as thoroughly as poss after running the caustic soda/water through and the seatpost bolt is completely removed, still no luck.
@Theoazb started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Have you greased it?