Laranzato espresso machine - Parts

Karma had the parts to plumb in the machine and will order the critical parts for the espresso machine.

Issues:

• Should I drain the boiler? - DEFERRED
• Parts - OPEN
• Karma was able to provide plumbing parts
• Karma is ordering 
• Steam wand
• Group head O ring
• 2 shot basket
• 2 shot spout
• back flush basket
• Drips from three-way valve - MOSTLY SOLVED
• Pressure gauge - DEFERRED
  I've decided to run the machine and see what happens.  Is 1 bar a reasonable pressure reading? Is it normal for the pressure to drop to 0 when drawing 0.5 liter of hot water? The system has a 4 liter tank!  Is it normal for the pressure to take 5 to 7 minutes to return to 1 bar? Is there normally some variation between 0.7 and 1.2 bar in the returning pressure? Is it normal for the safety valve to vent a bit of steam until boiler pressure returns? Is it normal for the antivacuum retaining clip to spin like a top until boiler pressure returns after dispensing 0.5 liter of hot water?  I may need to adjust the pressure stat. Since I'm new to this I didn't know what it was/looked like. Turns out this is it.
• Pressurestat - DEFERRED

CURRENT PARTS LIST:

• Steam wand - Looks like Espresso Parts has an after market wand at a reasonable price (<$40).  I'll talk to Dave today and see if he can help
• Citric acid: I'm going to defer this for the moment.  
• Amazon offers "Spicy World Citric Acid, 5-Pound"
•  Are 1 or 2 tablespoons of citric acid per liter the correct concentration?
• Portafilter - Espresso parts is a source or Dave may be able to help
• Double basket
• Double portafilter spout
• Backflush disk
• Group head gasket - Espresso Parts has part.  It is described as  RANCILIO GROUP HEAD PORTAFILTER GASKET - 74 X 57 X 8.2MM.  There is an aftermarket part as well described as "An economical alternative to the O.E.M. gasket. 73.5 x 57 x 8mm."
• Water source - Freshwater Systems has John Guest parts.  Dave may be able to supply them.
• John Guest Angle Stop Adapter Valve Lead-Free - 3/8 x 3/8 x 3/8
• 10' 3/8" tubing
• Connector to machine

CURRENT TODO LIST:

• Continue cleaning, cleaning, cleaning - I've got the machine mostly clean but need to go over it with some solvent to remove grease.
• Reassemble machine
• Buy/acquire needed parts
• Plumb in machine