We have rebuilt ones in stock or you can by pass (read screw) the people responsible for getting this done and take yours to the big box parts stores to have them rebuilt. Guess it depends on who you want to give your money to!
We have sent out a couple kits. After spending a lot of time trying to explain how to do it, they still shipped them back to us to assemble. It was a big waste of our time so we decided to only sell them assembled.