I have a bit of a weird predicament. For the last several years, I have made my wife a custom calendar/planner that I designed myself in ID. At my job I had a printer and a trimmer to cut it down to size, then I would do the saddle stitching by hand; pretty straightforward. This year though I have changed jobs and no longer have access to the equipment so I'm going to have to outsource. The problem is that for this version my wife would like to move to a plastic spiral binding. The problem is that, for years now, I have had the book laid out for trimming to 7.5" x 9.75", and I am trying to figure out some way to adjust to add a margin for binding without going through hundreds of pages and adjusting each one individually. Anyone have secret magic knowledge?