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I told him to give it a good thrash in a lower gear for a few miles on the motorway, which he did but that hasnt solved the problem.
I think he has owned it about 6 months now.

Wondered if any of you knowledgables have had any experiences of this issue...
I have a set of ceramic front brake calipers on an Audi (which I believe are made by Brembo). The inner bleed nipple on both calipers have seized primarily I presume as the bleed nipple is steel and the caliper body is alloy causing corrosion between the different metals
The brake system has been bled religiously every two years.
I have a chap who has had success of removing seized / snapped bleed nipples so I'm not overly concerned about getting out - but should I replace them with stainless steel or titanium alternatives?
I have researched this on t'interweb, and I'm leaning towards a high grade of stainless with maybe a smear of ceramic brake grease or red rubber grease on the thread,  but there is some suggestion that titanium and alloy are possibly better suited to the different metals, although there will aways be some reaction over time.
I am a little miffed that dispite them being slackened to bleed every two years they have seized, but if I can reduce the likelihood of this problem in the future, which alternative metal bleed nipple would be best?
Thanks

Thats now ordered, £179, which I'm happy with.

That's a beast of a setup, and good discount too, considering iirc the CFS on creality's site is £289 at full price. My k2 is currently in its box blocking up our hallway as I haven't had time to do anything with it since it turned up yesterday. Not sure where the 16kg of hyper PLA is going to live when it turns up sometime in the next hour 

Print yourself an extension.

I found mine was like that when I did the head gaskets - half the boss for the bolt was missing. I put it back together as it had clearly been like that since well before I bought the car. It was still like it when I sold the car several years later.

... you can book a flight and car package with us anywhere on the OneWorld network.

The problem with that is that the majority of PAX getting off at the destination end up hiring a car from the company paired with the airline. That leads to 'effin big queues at Hertz, and no-one at the Avis/Europcar/Alamo desks. So I would always book a car from a rental company NOT paired with the airline I arrived on.

Also BA are the only airline that have ever bumped me off - twice in fact. EJ and Ryanair never have, and as long as you play by their rules they'll get you there. So I avoid BA as best as I can, although sometimes I'm forced to uses them due to route or time constraints.

It's MUCH easier to remove and replace the head with the manifold attached.

Timing Chain: The most critical issue; wear leads to rattles, then chain/guide failure, potentially causing catastrophic engine damage (valves hitting pistons).
ECU Water Ingress (Corsa D): Poor ECU placement causes water damage, leading to injector errors (P020x codes), misfires, or complete non-starts.
Diesel Particulate Filter (DPF) & EGR: Clogging from short journeys and carbon buildup causes loss of power, sluggishness, and regeneration issues.
MAF Sensor: Can fail, causing limp mode and reduced power without triggering specific fault codes.
Fuel System: High-pressure fuel pump failures and issues with injector wiring (P2146) or clogged fuel filters occur.
Cold Starting: Can be affected by faulty coolant temperature sensors or glow plugs.


This could be his loss of power.

You said 'recently bought', so I assumed he'd have no idea how it had been used in the past.

He does a fair amount of motorway type driving in it.
Dont know about servicing as he has only had it a few months.
I would like to get some clues for him as he uses his local friendly garage and I have the distinct impression that they rip him off as he knows nothing about engines.
Plus, he is alone in my family of in laws as being the only one I would piss on if he was on fire, as somehow he has turned out to be a half decent bloke. 

If it has been used for short journeys and not given regular oil changes, it's going to be bunged up.