Well, first, no word yet from WLL on the problem with the Factory, but, we'll see how it goes. I've been more than a bit "anal" on insuring that water is in the boiler so that can't be the issue. Even tho I change the water for each session with the machine, I leave the OLD water in it UNTIL I'm ready to flush and start a new session. ALWAYS at least 1/4 up the site glass with water. I usually fill to about 3/4-7/8 up the site glass to start a session. That gives me enough water to do 3 warming flushes (up until water flows, wait just a bit, down to shut it off, repeat two more times to warm the group).
I did a "look inside" on the boiler today to see if there was any visible signs of a problem. No broken element (but as I suspect it's a standard coil of nickel chrome wire INSIDE the stainless outer shell, I wouldn't expect to see any physical broken element unless it had REALLY gotten over temp!), no obvious discoloration of the stainless element shell... Just no current flow BETWEEN the ends of the element! While looking in I figured that the "over temp" breaker will only work IF the p-stat over does it, as there's no apparent physical connection between the over temp breaker and the heating element itself. The over temp breaker senses, in a properly filled boiler, the WATER temperature (air if there's no water!).
Oh well, let's continue with what I'd PLANNED on doing yesterday... My intent was to bump the p-stat up to 1 bar top and see what that did to the espresso. @ 0.9 bar top I've been getting obvious sour 1st shots even with the warm up, so I was going to see if pushing the p-stat up to 1 bar would help that a bit (at least soften the sour shots!).
I've been pulling 4 shots a day with the Factory (as that's pretty much what I would NORMALLY do) and have only had 2 shots that I would consider "sink shots" (I'm sure others on this site would consider some of the shots that I've considered acceptable sink shots, but hey...). Over all I've been quite impressed with the machine. Deeper, more intense, espresso than any I've made with any of the OTHER espresso machines I've had/used. I've been pulling 1.5 oz "doubles" with about 12 grams in the double basket. Had a couple at the start that were 14-15 grams, but the 12-12.5 gram doubles seem to be MUCH nicer, full bodied, and the second double of the session is VERY nice!
Steaming on this machine is VERY different from the SBux Barista, both good and bad (well, not really BAD, just DIFFERENT!). The steam wand has 3 holes in a pattern about (just a guess) 45 degrees off of the "center line" of the tip and spaced equally around the perimeter (120 degrees rotation, I'm guessing). With the fixed nature of the tip (there's no swivel on this baby!) that's caused a few problems for me (as one of the nozzles appears to be just about parallel to the counter top, which makes staying just under the surface a challenge). But the steam goes on and on (and on....). I've noticed that, while the Barista coasts up about 5 degrees after you've turned off the steam, this one coasts up about 8-10 degrees, so stopping @ 140 degrees F will result in your milk/foam being at about 150 when it finishes coasting. Still not decent microfoam, but we're getting closer (or we WERE

).
Well, that's it for now, but as soon as I hear from WLL I'll update.
Steve C.
I'm having an out of coffee experience!
LMWDP # 164