I'm converting my MES 30 to PID control. For convenience, I want to add a socket to the outside of the control box to plug in the probe, then complete the hook-up on the box insides to the PID terminals. There is something in my memory that indicates these tiny wires are resistance-sensitive or some other issue. I would be adding on only 3-4 inches at most which to me is insignificant. Has anyone had any experience involving probe wires that should be addressed? Like whether to solder or not, wire size, etc? Thanks in advance!