Just received my knives back from KAI, it was like getting three new knives. The ZT 0550 has it's new blade and is as smooth as it was when I sent it in. My ZT 0560cbcf that had bad lock rock and is now rock solid. And the kershaw rake that I broke the tip off of has a new blade as well. ( $10 well spent).
Awesomeness! KAI is a great company that stands behind their product. Glad it all worked out for you! Now you should send me your 0550 so I can custom anodize the lockside