That is really bad luck on the powder coat and in my experience to remove the need for good luck and guarantee quality it requires $$$. A local frame builder I know has a devil of a time ensuring quality work when a customer wants powder coating or a re-chrome. He says there is a lot of turn over in staff with our local shops and he has to ask who is doing what every time he gives them a frame. Like a lot of things there is no Mr. Goodwrench always on the job, you can get stuck with the "new" guy or hungover guy at any time and powder coating a C&V beauty like yours is much harder than a auto wheel or patio set.