PSA for guys who do or used to bend wrenches for a living, DO NOT rely on your sense of touch to determine a part is smooth......
9 yrs on aircraft and 18 yrs in FOMOCO garages has nullified my sense of feel in my fingers.
Too many burns and scars..........
I need to add a brass shoe under the set-screw holding the moveable jaw to the screw and take some threads off the jaw end also, then it will work as intended.
After a lot of hand filing, burrs were removed.