Hopefully I'm not the only person to lose one, but I did... I haven't even looked at it for around 15 years. I know they are out of business and I am also aware of the new 209 plug. I am in a state where you aren't allowed to use the 209's. I thought that when I was looking a couple of years ago that I possibly saw that the T/C Blackdiamond may interchange? Any help would be greatly appreciated.