Part of my concern in these situations is in the fact that these airplanes are produced on a production line. That means there is going to be more than one worker responsible for one complete airplane. None of the parts are produced specifically for one airplane, in other worse, just because you get a complete kit all at once, doesn't mean that the wings you received, and the fuse, and tail, were all produced at the same time for that one particular airplane. They might have layed up 20 fuselages and 20 sets of wings, there is somebody responsible for each part. So when you see faults like this in all the components, it leads me to believe it's not just one person having a bad day, but rather the overall process at the factory.
If these airplanes were produced one at a time like the smaller guys do, and by one or two people, there would be an excuse, but these factories in china have multiple workers, working on many airplanes at once. It would be reasonable to think that the guy building the wings had a bad day IF everything else in the kit was done correctly, but to have flaws with the wings, fuse, and stab says to be that they are simply cutting corners.
Customer service is great, and replacement parts and/or kits are fine, but when it comes right down to it, there is no excuses for an overall airplane to have this many issues.
It's just my opinion, but when you start talking $5000, there are a lot of airplane options out there, you should have to settle for issues like these.