Pocket Door Lockset with 3 3/8' backset
We have a pocket door circa 1890 that needs a lockset with a 3 3/8" backset. it can be larger, like 3.5" or so, but no smaller. Face plate should be 8" tall. I've found tons of them with 2" - 3" backsets, but nothing greater. I know it exists because I have one, but need two. I think I've combed the internet and ebay and I'm not having any luck. Perhaps there is a stone unturned that someone can recommend?