Most of the wear will be toward the tips so putting something on them will certainly reduce the amount of rust dust when/if it ever did start. Since I had mine apart I spent a few dollars for the polyliner that goes betweeen them. I do not know if it will really help them work/slide any better but I hear it does help. Since my springs were a little rough, and worn toward the tips I figured I couldn't go wrong with the liner.
