For lack of a better description. Have done a little casting lately and it was working OK. I generally AT the unit (it shouldn't harm em') and it was holding temperature nicely both times. The third day I AT'd again and noticed that it wasn't holding quite as closely as before but certainly good enough to cast bullets.
Today when I turned it on it wasn't putting power out to the pot so I just plugged the pot in the unit with the Rex PID and did what I was going to do.
Tonight turned the Mypin on, same thing, no power out. So I checked the PID settings from the last session. It had set the "P" value to 0.
Changed the PID settings to a previous setting and bingo, get power out as normal.
Have a Auber and a Rex also and never a quirk with them. So far they're definitely doing a better job for me than this thing is. Starting to wonder if this unit slipped past the inspector!!!