Except for the following little detail, all of what Jason wrote is correct: I had indeed noticed the issues with neck stability very soon after receiving the bass, but since it was still the "pre-Jason-era" it was very hard to contact them. The final result of my inital experience with the OLD Fodera customer service was receiving a second truss rod adjustment tool for free.
Only when I noticed the incredible improvement in customer service I tried to contact them again. But of course, Jason can't know this old part of the story and I'm not sure I have shared it with Holly Wagner.
So, to get something positive out of the whole thing and wrap it up I think we can all agree that since Jason and Fodera have joined forces, the company finally has an online presence und customer service department that is worthy of their amazing instruments.
I will continue to work with Jason on a solution.
Thanks to everyone who offered their support and advice, either in public or via PM.