If you are having trouble with Black walnuts, you might try your hand at English walnuts. I do not think they taste as good, though. You guys that are finding the buggy walnuts; a good way to test them out beforehand is to put your walnuts in a bucket of water. The good ones will sink and the bad ones will will float.Also, has anybody here ever tried pickling walnuts? I am curious as to how they taste. Here is a YouTube detailing the process:
http://www.youtube.com/watch?v=GBoPw5FwKFw