Fixed some glazed pads (Ferodo DS2500); took them out lay some 120 grit wet/dry paper on the garage floor, scuffed the pads over to remove the shiny bits then sprayed CRC brake cleaner everwhere + light 240grit on rotors. Racebrakes recommended to bed them in again, and if I still encounter issues look at the Pagid 4-2 Blues.
Took 2x decent drives on the road to get the pads working evenly again.