Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Just cut a slot in it with a hacksaw blade Ted, dismount the blade, run it through the tube and remount, as soon as the blade cuts through the tube the entire length the tube will collapse on it's self very slightly, it will then just knock out no problem. Same system works with swinging arm bearings although that usually needs a forward mounted hacksaw blade
In the end I resorted to violence using a 15mm masonry bit with the SCS in hammer mode only it finally let go! Thanks for the encouragement everyone!