I don't see the reason why some guys want to jump on Cap232CM ??? He just shared his experience and disappointment with us about his new plane and all (almost) he gets is negative comments. To be honest, I would be disappointed too. When buying an ARF I expect it to be "almost ready to fly" and not having to do more stuff then assembling, gluing, and installing (steps mentioned in the assembly manual). The ARF manufacturer has to make sure everything fits before boxing and selling. Unfortunately we all know that this is not always the case. Just my $0.02

Cap232CM : I would sand the joiner to fit before sending the whole plane back and go thru all the shipping and packing and claiming. But that is just what I would do. Sometimes a little sander or dremel tool does wonders
If it is to bad, then claim it. I am pretty sure Morris will help you out. They are a nice company to work with, and stand behind their products (normally pretty good quality btw).