I had the same problem a couple of months ago, what I did is......
(i) mask around the affected areas
(ii) tape some fine wet+dry to a cork block - sorry can't remember what grade I used. And use water and sand any high points
(iii) when the glue residue is almost gone, don't keep rubbing and damage the laquer on the carbon, stop
(iv) remove the wet+dry and tape a piece of cloth, say from an old T-shirt, to the cork block
(v) then remove the masking tape, and onto the hard and time consuming part
(vi) I then polished, using the cloth attached to the cork block, the whole of the chassis using Autoglym's super resin polish which has a mild abrasive property to it. This step takes many evenings, so just sit in front of the TV and rub (that sounds wrong doesn't it
)
(vii) then using baby wipes, clean the chassis which now should be incredibly shiny.
I just used what I had in the house and am really happy how it turning out. So just wanted to let you know it can be done.
Caveat: this worked well on a Tamiya TRF501X chassis, not sure if other manufacturers carbon would be any different.