I have worked on a tandem that had two galled couplers (a couple of others with 'sticky' ones) with reported lithium something or the other used. The two described finally freed up after a doubtful period of wrestling time and resumed mostly normal function after a thorough cleaning and lubrication with the Krytox bearing grease followed by working it back and forth many times, recleaning and re-lubing. The potential for seizure or galling is greatly exacerbated by the fact that a large threaded surface area is involved due to the many threads engaged, and the largish tube diameters used on bicycles, particularly tandems. To me it is not worth the risk, given the cost of repair. Steve at S&S has obviously discovered a problem, found something that works, that protects his product, and his reputation. And it is doubtful that there is any personal financial skin in the game with Dupont. Combined with 30 years experience of seeing the stuff work when following Steve's recommendation, it is easy to also hang my hat on the same hook.