I've been cleaning up all the door mechanisms and tracks. Everything was going fine until just now. I pulled one of the mechanisms out of the EvapoRust and the large spring is broken. It was still intact when it went in the dip. It's still hanging on by a thread but I expect it to be in two pieces by morning.

What can I do? Can I replace the spring without having to disassemble the mechanism? Can I even get a replacement spring? Or, do I have to buy a different mechanism?

Dumb question, could the spring be welded? The break is towards the end.

The mechanisms are in really good shape...the springs were just super rusty. This is on a 68 Dart convertible if it matters. THanks