I now have a web site related to my photography business so I dedicated a page for the door lock picture.
(I am not soliciting photography business. I only do that for local schools and events - and you don't know where I live!)
Go to:
http://www.rogerdavisphoto.com/id2.html
After several months, my locks still function, but last August when it was hot they were sometimes sluggish. It's winter now and when they are cold they work pretty good. I like the solder ball idea and will probably try that next if problems return this summer. Otherwise, I'll break down for new actuators but install myself.
Roger