Had not seen it. Thanks! From: Brian Harrison [mailto:briankn4r at gmail.com] Subject: Re: [Milsurplus] Crystal Holder Pressure Hi Dave, Have you seen this great youtube video? https://www.youtube.com/watch?v=b--FKHCFjOM <https://www.youtube.com/watch?v=b--FKHCFjOM&t=29s > &t=29s