The rubber grip on the memory card door on my son's d2x is worn away. Is there a replacement grip available? I have not been able to find anything on the web. It looks like the entire door needs to be replaced. When I called Nikon in El Segundo the lady who gave me the cost estimate (not very helpful at all) said it would cost between $25 and $365 depending on the "impact damage". (Yeah I guess she did not listen when I said the camera was NOT dropped or damaged; that this was just plain wear). And, no, it could not be done while I wait if I bring the camera in even though the job itself might only take a few minutes. Anyway, the door itself is $42. Has anyone here replaced the door? Is it a complicated job?