Professional Photo Printers

[Tumdace]

Ive aligned my print head twice, and I still dont know why its doing this, but whenever I print ( just printed a 13x19, was printing some 8.5x11 earlier) I get a tiny white strip on the left side of the picture and along the bottom. The one along the bottom gets slightly bigger as it goes to the right.

Its almost like the paper is maybe not going in perfect straight, but it seems to be the exact same strip of white in the exact same places every time.

Any idea what I can do to fix this?