Adam how did you do the bit at the bottom of the rear window where it does'nt go all the way down ?
I was going to do mine but I wanted it to go behind the rubbers.

The end bit where your talking about has a rubber clip that pushes into a hole in the pillar and some double sided tape, once thats off the rest of the molding will just pull upwards.
 
I would be interested to see pics of how the rubber at bottom of windows comes off as I can see lumps underneath mine. Bet it's the dreaded rust.
 
Cheers that would be a great help. With regard to the carbon fibre I just found something interesting on eBay. Search SEAT LEON AND*IBIZA*Mk 1&2- CARBON FIBRE DOOR CARDS