all zaffiro I've seen in the past had just the probe pushed in
I know that Eric will not say 100% if is not so they possibly changed the design
and although is only one nut is holding the probe in place
only one way to know remove it
My Zaffiro is one of the first ones. I bought it from Chris Coffee on 7/1/2004. Maybe that can help determine the type of probe? stefano
That nut is seriously seized too, and I can't get enough leverage to get it to move. I want a cubic boiler next time, the cylindrical ones are a pain.
I'm going to WD40 around the nut though that probably won't help much if it's seized enough that WD40 can't get to the threads... Can I put WD40 inside the nut hole if it turns out the probe should slide out (after checking from you experts on what should have come in 2004)? I called Will at Home Espresso Repair and he doesn't remember everything he's done to the machine over the year, but I don't recall him ever saying he had to change the thermostat so I am assuming the probe is the original one.