Front rack suggestions

Silly me bought this super expensive thing with too short screw thread for my fork, which is as I heard a pretty normal problem – maybe that is the reason why is claimed to be super light because of saving 30 mm of thread – so I have now 2 options:

• drill 8,5 mm in my carbon fork about 30 mm on the backside to make the hole bigger for a Shimano allen nut, now the hole is 6 mm, my body and stationary drill is ready
  
• sell it