I have a problem bonding metal to carbon fibre, I'm using sikaflex, which I have never had a problem with before, but it keeps "sliding" out of the bond.  There is a good key on both parts and they are fully degreased using acetone.  The problem seems to be the aluminium keeps sliding out of the sikaflex and not bonding.  I need to get it fixed for next weekend so any help is much appreciated!