D600 dust issue, are you not worried that something maybe failing inside the camera?

I have a D600, I am not a pro. I have a rocket blower and it works fine. If I need to, I use VisibleDust Vswabs + sensor fluid to clean the sensor and have done so once (took me 15 minutes). The camera is under warranty so if I need to I will send it in. I am not very much worried about this issue at this time. I am amazed at the picture quality and the large prints I am able to printout for my personal enjoyment. I give the prints away to friends as gifts.