Hi Shayna,
Cute lobster!
So mine looked like that… where it changed the areas of disappearance.
What I found as the problem was that I left the rollers on my press all the time (they are SO hard to take on and off). So then flat spots would occur on the taped trucks/rails. Do you leave yours on the press?
If not, it could be a myriad of things: uneven rollers, bent rollers, dented rails…