Anyone know anything about disc brakes?

Well, there may or may not be a problem. The first and most likely explanation is that the brake is designed to run a very tight tolerance. Companies sometimes make this decision because it affects lever feel or 'mechanical advantage'. This however makes the brake hard to set up. Hope are often criticised for this.

On the other hand, we could could assume there is an issue. I notice that TRP make specific Spyre rotors. Perhaps these are thinner than the ones you are using. Another possibility is that - as you suggest - the adjustment screws have been drowned in thread lock and need some persuasion. However, if you're able to turn the screws to a certain point and then they seem to stop, it's not a thread lock issue. Don't force then of you'll round the hex hole.

Not a lot of information there unfortunately :(

Hope that helps.

I've just had a look at the same spyres on a stock bike and they have a wider gap definately - so it might be a rotor issue - and yep there is a bit of adjustment in the adjusters before the stop so they are not threadlocked - I will get some vernier calipers on the rotors and see if that's it

vaguely recall someone talking about cheap disc brake pads. I have a shimano flatmount rear and post mount front and want some new pads. Any recommendations?

uberbike

aaahh that's it. Had ubyke in my head which didn't make sense.

SRAM Rival; Losing fluid at the caliper end, where the cable goes into the brake.
Not torqued up the bolt enough?

Where do you even get a torque wrench with a spanner head?!
Will clean up, refit and go toighter.

Get some new fittings and try again.

Do they have flat mount pads yet (L04C)? Last time I ordered the wrong pads.

New olive/barb or more than this?

Assuming it's not a banjo connection I'd replace the bolt too.

Was checking what's on offer on CRC and prices of Shimano MTB hydro had gone through the roof!

Deore used to be sub 30 quid!

Look at bike24, they have those trekking hydraulic for cheap.

Those are long blades/arm and got used to the 2 fingers compact levers.

Has new Deore ever been <£30?

Pretty sure I got my Deore M615 for less than 30.

And the noticeable hike also for SLX and XT.

#brexitbonus

This! :(

I paid £60 an end for BR-M655 when they'd been out for a while, and that was a reasonable price at the time. You can buy M7000 for £124 at Merlin so they've not gone up in price, not sure why Deore would go up.

SLX? I sold mine for 35 when they were at 45 RRP.

And I sold a XT a month ago for 70 without checking the current price...

Both new and should have kept them!

Has new Deore ever been <£30?

This.

I don't recall it being cheap in the first place, but the Shimano Acera BR-M395 is usually cheap and readily avaliable;

Recent ride has convinced me to abandon disc brakes. My rear Lyra Tektro has crumbled inside, had it been the front I'd have been in trouble. Constant pressure on a long descent, a sudden click and now it won't actuate.

My front, which I upgraded to a TRP sprye, has always been a bit shit, got steadily worse during the ride, which was very wet / muddy. Just given it a full strip down and de-grease, and with the lever held super tight, I can still turn the front wheel.

Probably you.

Well, set up, Lyras are a bit shit, but spyres can definitely work.

@winnifred0001 did you go to this level?
https://singletrackworld.com/forum/topic/psa-trp-spyre-rebuild-guide/

Spyres on my commuter after a winters abuse are now ok. Spyres on my caad12 with DA cables and icetech rotors are simply brilliant