Originally Posted by folder fanatic

How about a bit more simple fix rather than buying a whole new LH crank. I use a old clean preferably thick sock to protect both my own older Brompton's chainstay paint, slipping it on when I fold the pedal up. Try it. It works well especially if you are shipping the bike somewhere. Using socks as cushions is not just for Bromptons. The old sock idea works well even with other collapsed bikes.