I feel your pain! This past Sunday I dropped my first really good flashlight, a pristine SureFire 6P, onto my rough concrete driveway. I had pulled the flashlight from my jacket pocket facing toward me. I gently tossed the light in the air to flip it around and - oops! It landed on the corner of its bezel and bounced end over end into the rocks next to the driveway. Needless to say, my new 6P ain't pristine no more!
I bought my light to be a tool as well as a toy. It's a toy in the sense that I already have four lamp assemblies for it, a spare SF clone bezel, an A19 battery adapter and a DigiLight 9V range extender. I knew from the start that my SureFire would eventually pick up a few "character marks". Dropping it on the pavement was a bit of a heart-breaker though.
I offer this up for you to consider. All of my most prized personal possessions have one thing in common - wear marks that make them uniquely mine. I have a small watch collection, among them are a couple of pristine collectables that I hardly ever wear. Which of my watches do I really treasure though? Easily they are my Grandfather's gold retirement watch, my Great Uncle's watch that has a unique and colorful story to it, my college graduation watch that I've beat to death (but it still runs) and an old Seiko Diver's Watch that was my daily companion during my military days. In addition to watches, I attach the same feelings to an old SLR camera of mine, tools that I inherited from my Grandfather and my Father, and a few other storied items that my wife swears are just junk but that I will never part with.
If you don't use a thing it will never truly belong to you. Enjoy your Arc flashlight. When you can tell it at a glance from any other Arc, it will have become yours and yours alone.