[KCV6]

Hey Steve,

Did you clean the part and activate the copper after baking just prior to nickel plating?

You need to polish all the dark patches out of the baked copper surface and de-grease and then activate in 10% Hydroclauric acid to get a nice bright active copper surface before nickel plating.

All is not lost, just polish the part now and degrease and activate and re nickel plate

Cheers

Mark