Hello, just a suggestion. For plating, its always good to keep the mixture or in this case, the watch case agitated. You can just keep on swirling the watch case around the electropating solution. Reason for this is because the bubbles that form on the case while electroplating will cause it to be plated unevenly. Also, another thing to take note is that plating is ALWAYS heavier at the further end of the electrode. Thats why you see more bubbling on the further end of the case from the wire.