[Mr mischief]

A metal tube over one end of the handle bar that is bent, a wall and a mate!
As long as there is no crease in the metal before or after – no problem.
To check your results, put some weight on them (you).

DO NOT use the lock-stop on the handlebar movement (knobby thing on the
headstock), that is what the wall and mate are for!!

The lock stop while normally well welded in position is only attached to a
relatively thin section of metal (normally). This holds in place the
steering head bearings, so avoid any undue stress there.

Mr mischief.