Thanks for the replies , Learn something new every day!
I’ve bled them , i’ve tried multiple methods from syringe upwards, a bottle, pulling lever and open close bleed nipple and bleed nipple closed and pulling the lever repeatedly to bring up the bubbles,
I’ve had it air free several times, as i said it’d work perfectly for the first couple of pulls ,but then back to mush.
When i was cleaning them up with the compressor some fluid did splatter when i sprayed in to the lever pivot area(but after bleeding so could easily be overflow) piston seals dont seam to be weeping as the pads didnt have any oil on them but who knows!