I dont think you got what i was asking for.
You need to insulate the bolts that hold the parts (power diodes if not in error) on the waterblock.
example from BladeRunner's work :
http://www.zerofanzone.co.uk/picture...su/psu_012.jpg
Seen the washers on the bolts...? Try that.
I dont know if you used any but the pictures dont show any.