Hey all, I got 2 Edit Hex tools.. an 1.5mm and 2mm I have a issue with them. If I try and tighten up and Hex.. I can get it reasonably tight, but then if I try to make it nice and tight.. the handle turn's but the Shaft dosnt.. so It wont tighten anymore, So I have to use a allen Key to tighten it up more. I have tightend the grub screw in the handle.. as hard as I can and still no difference, and Put some threadlock on and nothing.. what could be the issue??