Nice job espressme. I was a bit more lazy, just cut out a square of aluminum and stuffed it into the joint where the copper sides meet the faceplate, making sure it pushes on the upper part of the switch. Now i need one of you analytical chemists to reassure me that the metals will not perform some weird anion exchange and get ruined.
More GOOD NEWS, Burkii, a guy from Hawaii sent me some parts, and i saw the thermostat on his springloaded Enrico IS ADJUSTABLE! I imediately looked with a flashlight under my machine and i could see where the mounting holes were, so i blindly guesstimated the location of the switch, to get an idea look below. I took the drill the the bottom plate and drilled very slowly and carefully until i hit a fiberglass protective layer. I cut a hole with a #11 blade (surgeons and hobbyists love it) and below it lies the adjustable with a screwdriver t-stat. I replaced the steam valve-wand assembly with the one he sent me, keeping the color graded gauge from my old one (his dial was white) and increased the t-stat a bit so boiler pressure now hovers around 1, no more backflow into the reservoir.
Love this machine. I've done so many things to her that it has acquired sentimental value, so now it will stay with me.
One more thing, i used a rubber bulb pump and oxygen tubing to make a sump pump for the reservoir, without it one can never fully empty it.
What totally pxxxes me off is that now i will have to add a third grinder to my home collection. Have you noticed the need for coarser grinding with this machine? I come from the ULKA world of Isomac Millennium/Venus and Solis SL-90.
The above should not be interpreted as encouragement to do the same. Do the same at own risk.