Man, I've been searching for one of those straps also, if anyone has a souce it would be greatly appreciated. I actually bought one at the local surplus joint back in the early 80's. I had no idea what it was when I got it, there was a large bin and they were $1 each! Now that I know what it's for, and have a 1919, the thing is dry rotted from spending 10 years in my old mans barn. I've been on the look out for a replacement for a couple of years now.