Do any of you with mac pro's notice any scratches on the drive sleds when adding / removing / changing hard drives? Just bought a new 2009 Quad, and I just looked at the sleds and they are scratched up on top where they make contact with the chassis. Also, seems my chassis is scratched at the same place where they contact the sleds. Is this inevitable? or can something be done to prevent this? A little OCD I know, but I find it odd apple would design these things with scratching being inevitable when one changes hard drives. If it is inevitable, is no way to prevent the scuffing?