Are you allowing the AS5 to cure? personally id ditch AS5 and go get some MX2 or even ocz freeze, which don't require curing time, and honestly iv found to be far better aswell.
No I had not let the AS5 cure, is this required before stress testing? I have had a fiddle with the voltages and am now getting 80 degrees on full load @ 4.0GHz this seems to be a far more acceptable temp but why would OCUK ship it with a higher voltage than required?