Hi,
I am having the same problem as you with my back door. It has become harder over the last few weeks to get the door locked once the handle has been pushed up. Last night it locked and now I can not get it open. The key only turns a little way ( both directions )but the handle will not budge!!! My poor dog is so confused as I am having to take her out the front door to the garden!!!
Do you suggest I get my partner to do what you have done? Did it fix your problem?
Many thanks
Lisa Faircloth, March 2009