Maybe the set screw is a little worn. Or maybe I was wrong on the 1.5 mm. Do you have a 2 mm Allen key you can try? You may be able to find another set screw at a local hardware store. I wouldn’t think you need to replace the knob.Thank you. I manage to unscrew the knob and then screw it back although the 1.5mm allen wrench was a bit small compared to the screw hole (weird). I try my best to fasten the screw, but the knob still wobble, even worse than before. I guess the screw and/or the thread inside the hole of the knob has worn out?
Maybe i should replace the whole knob?
Here are some photos. Is there something wrong here?
Did you purchase the Rag 2 new from Schiit or get it used?