I received mine today from forbidden planet and I too have a defective cowl, scratch/scuff mark on the forehead (literally the worst place for damage thinkable) so I tried to gently rub it off but due to the nature of the cowl it has now damaged the Matt rough texture too, leaving a shiny spot behind. The scratch is also still there.
It's actually Not crazy noticeable but I'm too OCD to keep it. Plus it cost a ****ing arm and a leg.
Trying to organise an exchange from forbidden planet but they are so hopeless they can't even guarantee they have one to send back to me.
Not sure what my options are from here on in.
Rant over