Erik,

It has been my experience that higher chlorides do not cause burning or over
plating as may be the case here. Higher than normal chlorides will reduce
the bright current density plating range by leading to dull deposits in the
low current density areas.

Raising the copper concentration of the electrolyte will lead to poor
plating distribution and throwing power. Adding a "leveler"Â Â Â  does not help
in this case. It may be that one of the other components of the additive
such as the carrier is low which will lead to overplating.
-----Orignal Message-----
From: Eric Yakobson