so my question is what type of glue should I use to fix it? or would it be covered under the warranty and if so should I send it to nikon? I wouldn't be out out of a camera, just picked up a d7000 as a backup. any thoughts would be appreciated.
Is your camera less than 1 year old? If not, I don't think you have warranty coverage. As for regluing, it's an easy fix. Remove the old glue from the rubber and camera body. Apply rubber cement to both surfaces and hold them in place until it dries. I got my cement from Lowe's but it's available at any hardware store.
I used the Scotch permanent double sided tape that I use to mount photos to temporarily hold the rubber grip on my D200 more than 3 years ago. It was originally going to a stop gap to get through a days shooting but is still holding. The tape is acid free so it won't harm the rubber or paint. For the sake of full disclosure, the body is now a backup to the backup of the backup, and only sees use when I take non-photographer out with me or for the extreme danger shots that my D50 used to get stuck doing.
Will shoot for fame...fun...food... a heck I'll shoot anytime anywhere.
I took my D300 to the local camera store with this issue. I had just returned from Africa so the camera was in need of a good cleaning. It cost $135 for the general cleaning plus the sensor cleaning plus new rubber grips. The camera looks and works like new.
BTW, I not sure if it is true, but they said that the rubber grips actually stretch and because of that just using glue would not have been a good solution.
Rubber grips should have some flex, so a rubber contact cement works but an epoxy or Gorilla glue would be a mistake. I would not use just any glue. You also need something that can be removed since some repairs need access to screws under the rubber grip.