After a poultry 1,200 miles the FSA Mega Exo BB on my carbon bike is creaky and near death. My first reaction was to say this FSA carbon crank needs to go (that may still work out to have been the correct answer).
I googled a bit and found quite a bit on FSA bottom bracket (external cup type) being pretty weak.
I also found this outfit the sells an FSA compatible BB that sounds more robust and like it might have a chance under a hammering 215lb clyde (I was a heavy 245 when I got the bike).
Anyone else tried these? Linky