About a year ago I saw a video of a home made tool that someone made from nuts, bolts and washers for creating a flat area where the weldless ball valve attaches to the keggle. I think the idea behind it was that the keggle would be less likely to leak if the washer were on a flat surface. I've tried numerous searches to find the video and have been unsuccessful. Does anyone recall this video and if so could you provide a link if you have it?