hey CAMEL, drive the pin out from bottom to top!! and back in the same way. just tape both sides of the hole with duct tape just to be safe/ and if you feel you dont have a steady hand. keep tapping with punch till pin is out and upon re-assemble, use some small needle nose to hold pin while starting it. the hole is not bigger or smaller on either end. its just waaaaaaay easier hammering with no obstructions from bottom to top. TS