Braided Brake Line failure?

[Adam2201]

I can't figure out how to post a video up to show you, but if you put a finger at either end of the spring you can rock it backwards and forwards against the caliper body, whereas the one on the right just doesn't move at all.  Found a few more posts on here saying the same thing about the spring (I think one is from you from when you were having problems with juddering) and talking about modding the spring so I will have a good read through those and see if I can figure it out.  Cheers for the help, I feel like I'm getting somewhere with it, as the sensation when you brake does feel like the pads are chattering about in the caliper.