Hi, first time poster here, but long, long time OM user !
My OM1 has the small grip for the OM3Ti and OM4Ti attached. Done by a friend / former repairman with Leitz, it meant taking the leather off a bit, drilling a hole, doing a screw thread in the hole, closing the whole thing up . . . took him 10 minutes . . about 5 years ago and it still sits there, rock solid.
If someone can explain how to attach a picture by uploading from my desktop . . . then I will show you. I only find the Insert image Icon that wants a link. I don't have a link, just a picture