Well, the Plettenberg were advertised as "designed for the MK-Bl-Ctrl 2.0", and 15x4 props at 5s were recommended as an optimum combination. Now they advice not to use bigger props than 13", they suggest to stick to 4s, etc.
Since nobody admits that there is a problem, and recommendations change from week to week, be carefull when you choose to go with Plettenberg and MK or Aerodrive.