[PhaceN52]

This may sound and probably it's stupid, but if everything has been replaced with assuming good parts, could be a problem related to the caliper carrier? After a lot of heat cycles of cold/hot/cold, could this over time "relieve" some stress in the metallurgy of the carrier leading to a slight twist/torsion (tenths of a millimetre / 0.004 inches) that leads to the guide pins not being perfectly parallel between each other or between the carrier and the disc and so making the brakes shake?