Hi , so the brew pressure gauge is reading 9-10 bar when pumping? First thing to check would be the group restrictor . Un do the 22mm nut on top of the group head, inside is a small brass piece called restrictor/gicleur . It has a small opening which typically blocks when machines left idle. You can...

You need to remove the complete valve to replace the o'ring. First 17mm spanner to remove the pipe to the boiler, then 17mm long socket on the nut to remove the nut. Take complete valve off and use allen or hex key to remove the back section of the steam valve. Replace o'ring and re install in rever...

So, you had a machine you know is misbehaving, you disconnected a component, then turned it on and left the room for 40 mins...?? Please be more careful , this is a pressure vessel combined with electricity . If you are not sure what you are doing, take it to a professional . For starters, if your g...

Agreed, thats some pretty dodgy looking wiring and crimping, i'd suggest a new factory harness. They aren't expensive, and a machine of this value deserves it; {link}

The stock Micra wand is surprisingly good, IF you can get the wand length to work for you. There is the trick with positioning it backwards for larger jugs. I tried a couple of other wands, but ended up going back to stock wand with GS3/slayer tip and the extra length of the tip made it usable for me.

The threaded section on your thermostat looks damaged, but the boiler thread looks ok. Replace the thermostat, and you should be ok

It sounds like you are referring to the steam boiler filling, if it does this during making a shot, it can ruin it as the brew pressure will drop as pump is diverted to steam boiler filling. Things that can contribute to this or make it more frequent are small leaks from steam boiler (usually the an...

I don't know the exact dimensions of your group seal, but if you can post O.D and I.D , someone may know of something else will fit. For example, the Faema family uses a 6mm groupseal ; {link}

It's rare for a machine to be putting out 'too much pressure', and your brew pressure gauge is reading 9 bar, so that should be ok. Too fast shots is usually more related to coffee freshness and grinder setting. What grinder and beans are you using so we can rule out that possibility?

Without photos, this really feels like a discussion you should be having with your vendor. Yes, the machine would be tested not only by manufacturer, but also seller, especially if installing a flow reg to ensure it works and no leaks . It's very hard to get rid of absolutely all residual water and ...