He's done one. He's coming back Thursday week to do the other. In the meantime, he's wrapped some PTFE tape around it.
Sorry but I do have a proposal here for a research paper intended for an Ignobel award: on investigations into the synchronised or half-rate jogging chest area bounce, depending on the elastic properties of various structures and the speed of the jogger. Some people round here are definitely in the half-rate mode...
I'm not sure why I keep clicking on this thread after the eye-gouging pic posted earlier... I told myself to stay away but it's like watching a car accident in slow-motion. I just can't help it. Doctor!!?