I recently purchased a refurbished Galaxy Note 10.1, and I've been using it to take a lot of notes (for an online class). I've noticed that the screen tends to making small creaking noises from time to time whenever I rest my palm on the screen to write, and if I look carefully I can see the screen visibly bend a tiny bit. I'm not even applying a lot of pressure: just enough to write with the S-pen. Is this normal, or is it something I should worry about? I have the option of sending it in for a replacement, but I would rather not have to go through this trouble. I can live with the noise if it's harmless, but I'm worried that my device will become damaged over time.