"One likely problem is my grounding."
I suggest only using an additional clamp or vice grip when the part is too small for the ground clamp, otherwise you are creating one more path of resistance for the current circuit to flow. i.e. an overheated ground clamp. If you like the c-clamp or vice grip method then attach your ground lead to the custom made clamp.
I suggest only using an additional clamp or vice grip when the part is too small for the ground clamp, otherwise you are creating one more path of resistance for the current circuit to flow. i.e. an overheated ground clamp. If you like the c-clamp or vice grip method then attach your ground lead to the custom made clamp.