I'm backing up what @jwheeler mentioned about the paper loading procedure. Taking an extra minute or two to get the tray side-guides adjusted properly can really improve how smooth of a run you have. Just to add to this:
- Don't load the tray full of paper and try to adjust the guides - you can't effectively adjust the side-guides if there's a heavy brick of paper to try and nudge.
- I typically use more than just a couple sheets to do this (maybe a 1/2" stack), but the effect is the same.
- As a 'manual' check after I lock the side-guides, I'll grab the top sheet and slide it back-and-forth to ensure it can easily move. If I can move it without any resistance - so can the press.
- You'll likely notice once you get the side-guides adjusted properly, that when you drop the tray back to the loading position the side-guides may look too far from the paper. Don't worry about this.
- This doesn't pertain to the perfect binder, but If you're using the LCT or LCT banner tray - setting the side guides is a bit more difficult as there's no way to lock the tray at the top of travel (feed position), so you can only load some paper and eyeball it. As an example: I have the LCT banner tray and there are 6 lock knobs for four side guides. It just takes a little more time to carefully dial their positions in for a smooth run. I've found using the ruler guides really do help in this case (I never use them for the standard PFT's).