Undo the allen bolt til it's loose (don't overdo this or you'll lose the bottom of the stem in the head tube). Then as Alkali says, a tap on the bolt will push it down and release. Be sure to re-grease before re-assembling as all that WD40 will have dried it all out.
Oh and consider the merits of mechanics at 2am on a Sunday morning.
This is the first and almost certainly the last time that this particular dunce will pass on any mechanical advice on this forum.
Undo the allen bolt til it's loose (don't overdo this or you'll lose the bottom of the stem in the head tube). Then as Alkali says, a tap on the bolt will push it down and release. Be sure to re-grease before re-assembling as all that WD40 will have dried it all out.
Oh and consider the merits of mechanics at 2am on a Sunday morning.
This is the first and almost certainly the last time that this particular dunce will pass on any mechanical advice on this forum.