I need a set to. And the gears.
I think I have the gear problem solved for now, but we will see.
As for the spring, I'm gonna take one of the spring (broken) to Ace hardware and see if I can find a spring that might work. If they don't have one in their 'spring' hardware section, I am going to look at the springs for the screen doors and see if these might work.
A little ingenuity and lots of luck might save a few bucks. I post the result of my hunt once I'm done.