Sooz is refurbing the nearly new compressor from her car and found telltale white powder from failed air dryer desiccant. That explains the premature failure.
She's 75% through rebuilding a different valve block soon that's sorted.
We have air dryer refurb kits including foil packed desiccant.
1 Where else can we clean up residue while we're changing all the major elements? I'm hoping most has been blown through into the air springs.
2 Is the block currently on the car buggered or can it be cleaned and refurbished?