I have nothing but praise for Queen Cutlery... firstly how many other production knife making firms actually list on their web site all the top honchos complete with email addresses?
GEC list one and a generic sales@ Canal Street have just a generic info@
http://www.queencutlery.com/Contact_Us.html
Last year I had dealings with a less than scrupulous Dealer in the US over a QC knife.
Ryan Daniels went way way way beyond expectations in making sure the issue was rectified.
(I'm on the other side of the world in Australia and had no problems communicating with them & getting a very good outcome)
If you have issues with repairs the lady to talk to is Sue Vincent send her an email and CC it to Ken or Ryan
If you address your concerns in a polite and reasonable manner and be patient (remember this is a big company) I am sure you will find them more than obliging to deal with.
I now have 6 QC knives (and counting

) and have no quality issues with any of them.
Derek