I have the deluxe rtd probes from auber. The leads they provided coming from the xlr aren't long enough to reach my pids. What is the best way to go about extending them? Can I simply use butt crimp connectors with heat shrink tubing or does wire this small need to be soldered? I have soldered copper, but never anything electrical and would like to avoid it if at all possible. Thanks in advance...wnc