Are the puckers just showing up with the paper on or when the paper comes off?
If they are showing up with the paper on, what does it look like when you take the paper off?
If the puckers are showing up after your paper is off, it might be that you are pulling and not tearing the paper off. I know that my first PP was a problem, because I was not getting the paper folded and creased enough to tear and I was pulling.