Textured ecoat on galvanized service parts

Our company is using textured ecoat on galvanized service parts. We were told the galvanized coating is electrolytically applied with 60/60 zinc weights. Now the textured ecoat surface is made up of little bumps in various sizes. This has never been an issue from the customer, but they have told us to improve the textured look. How can we identify the cause?