I have read that spray glue is not recomended to use om The mould on cosmeticparts. I coated my mould With The GC50 gelcoat and it cured to much for me so ther was no tack in it to make The carbonfibre stick to The mould. Is it possible to use spray glue instead, when The gelcoat has cured too long?

Don't use spray glue as you will not have a bond between the gel coat and the rest of the layup. Try wiping a bit of acetone on the cured surface then make up some resin and put some on top then continue with your layup.

As long as you don't go way to heavy with the spray adhesive, you won't have an issue with bond strength. 

I follow Hanaldo on this one,

Hello Red Rocket,