What was wrong with the Dingwall?After the anxious experience of waiting for the delivery of an expensive bass, if I received this much...
...I would keep it and, yeah, fix it myself.
Aside: It reminds me of the uneven string spacing on the American and also Mexican Geddy Js (visible on photos at your retailer). Oh, I just fixed it myself but it did "stick in my craw" a little. But I don't feel negative toward the repaired bass at all. I hope you can feel the same if you keep it. I think the "sounds fantastic" trumps this easily.
It also reminds me of imperfections in at least one of my Rics and also an Import Dingwall, both almost as expensive as yours. I'm forced to forgive Rickenbacker because it's one of my two favorites (and also because their QC is very thoroughly discussed in the Ric club so I was ready for it), but I sold the Dingwall.

