Hi, I hope someone can help. I need to replace a rear spring that is broken on my MK5 GTI. I have found that there seems to be a bit which I assume holds the rubber in shape on the spring that is still ok, but is missing on the side of the broken spring. I don’t want to install a new spring if this is an essential part. I have searched everywhere and can’t seem to find a name or part no of this thing. Any help would be appreciated. Thanks!