Slipping seat pin.

[central]

I've got a Bontrager OCLV XXX lite carbon post on my Klein Attitude XX.

Is it a good or bad idea to try hairspray? Or will it melt the post?

[Nick_F]

Clean and degrease the seat tube; if that doesn't do it then you can now get 'assembly paste' for carbon bars, seatposts etc. I just can't remember where from.

[mk1fan]

Pace do such a grease.

[option click]

I wouldn't recommend hairspray - I've heard that some of the chemicals used can degrade the carbon.
I use Tacx assembly paste - one tub will last you *ages*
http://www.swinnertoncycles.co.uk/Carbon-Assembly-...

[pastrana72]

yeah, do not use hair spray on a carbon post.

[Adrian W]

Put a cork in side the post, usually cures it