Cheers all. I was using the pdf download of the bleed instructions which doesn’t detail the final tweaks in the same way as that video.
After a third bleed and half a bottle of fluid soaking into rags (it p*sses out of the lever syringe every time I disconnect it). I’d decided to cut my losses and packed it back into the box and am about to download a returns form for the shop.
I may have another go following the video although it’ll be a tester as I’ll do it out of the frame so if it does work it’ll need doing again after that!
It’s such a pain though as with the hose threaded through the frame the bleed process is so much more tricky! Wish I’d checked the function as soon as it came out of the box and would have done had it been a regular version which didn’t need disconnecting to fit it into the frame.
I have bled a Reverb before, my old one and that went fine.
It just seems so strange that it won’t budge at all, I wouldn’t have imagined that air in the system would have caused this.