406 Headlamp Rim Removal

[PeterJD]

Hi All,
I need to remove the headlamp chrome rim on my 406 in order to replace the front sidelight bulb.
The Instruction Manual says "Remove the rim by pulling on the finger grip at the base of the rim when it will become entirely free"
I can rotate the rim, however, it is refusing to come off, even when attempting to remove it with a large padded screwdriver.
Maybe someone has been there before me...?
Does anyone have any suggestions please?
Peter