A6 labels always wonky not straight

[Xad]

My normal a4, a5 etc prints are always fine, but whenever i print a6 (10.5 x 14.8cm) items such as labels, they never come out straight, for some reason they always come out wonky and at an angle. I use tray 1 where i flip down the front to open. The printer is a HP CP2025, i used to have a HP 2200 before and this never happened.

I've attached a photo to show what i mean. Anyone know why this is? 

[Xad]

Good news, managed to fix the problem after months of wonky a6 labels, now printing perfectly. Found that a small white plastic pin came off from the inside of the back door and was just lying on the bottom of the printer, luckily i didn't lose it or it fall out and i accidentally vacuum it up. I was sceptical that tiny plastic white pin could be the cause, and yet it was and it fixed the issue.

It's thanks to this post that mentioned the back door that i decided to look there.

[Xad]

Turns out the plastic pin did not fix the issue as the issue's back, A6 labels come out wonky as shown in the photo. Anyone else have a CP2025, do your A6 labels come printed straight or are they wonky as well?