Specks of dust in the viewfinder?

If they are sharply focused in the viewfinder then they are on the focusing screen. They will not have any effect on your pictures so you don't really need to worry so think about living with them but I know they are annoying. The focusing screen is located at the at the top of the camera and horizontal as you look in. The specks are held in place by static electricity and I have found that a gentle breath across the mouth of the camera will release the static enough for the rocket blower to shift them. Good luck.