Originally Posted by aliwakeskate

The metal tube can be moved out of the way just enough to see the lip of the bearing - it is probably just a bit stuck in there at the moment.

When I did mine I used some 10mm diameter steel bar (a big screwdriver or something would do the same job) I had lying about to kind of lever the bottom of the tube to one side to reveal the edge of the bearing. It took a little bit of pressure to 'force' the tube to one side.