We have had our Faema Family (aluminum boiler, slider steam release) since 1996 and it still makes crema! Unfortunately, as of yesterday, water is only weeping from the main group. Steam and hot water ok; descaled recently at service shop. I suspect the 3-way solenoid valve. I've borrowed some very slim, flat wrenches to slip under the part and grab the hex ring nut at its base. Any tips on removing it without damaging anything? Photos here: https://drive.google.com/open?id=1-o...mXsP7dGi8Dszwi