Tbar adjuster nuts.

If no luck I have these $25 shipped EC423EDA-B80E-4FCB-9A47-D5FCC151F9A7.jpeg993F0413-08EC-4383-860D-FC296CA462F9.jpegF7DC82DA-7069-4FD6-A77F-050E57945EDC.jpeg8EC967DA-4335-4DA1-9056-61B0E8D48C86.jpeg38EE53A9-16A9-41F5-A333-61ECF0282382.jpeg63EEEBF3-98A8-441F-B286-62144DA9715B.jpeg