Interesting info. Thanks for clarifying.

When you get your delrin cover, I've read that people are using blue loctite to keep tension on that piece, as well as to keep the screw in place as a result of vibration, etc. You should contact Thor (thorusa.com) to see if he has other suggestions, but I think he said he's at a boat expo now. The other option is to check the Dahon forums if you haven't already done so.