Back in January 2006, when I bought my first TS55, I only intended it to break down sheet goods leaving a glue-ready edge. So with the TS55 I not only bought extra rails, I purchased two extra 48 tooth blades shipped with the TS55, Cat # 491 952 (currently cat #495 377) All of those of course have a 2.2mm kerf. When I bought a second TS55, I was careful that its toe-in was identical and that the inner edge of the keft was in the same relationship with the guide rails as the older saw.
Where things go complicated was with my purchase of a TS75. Since I knew I would be using the TS75 for solid hardwood more than sheet material, I bout all the available blades. None had identical kerfs All also would have cut into the splinter guards. My solution was to be sure the toe-in of the TS75 was appropriately adjusted. Taking all the TS75 blades to a precision machine shop of which I am a partner, we measured the distance from the inside of the plate to that side of the kerf. Since that was always more than the TS55 48 tooth blades, we turned a length of tool steel bar stock with a hole that would be a snug fit on the TS55 arbor. We then cut thinish slices off the machined bar. One by one those slices were mounted on the magnetic flat holder of a surface grinder.
In woodworking terms the first pass on one side is like using a joined to the flat of a plank. Then we turn the blank shim over and use the surface grinder as a thickness planer. Once completed and tested we engrave each shim with the SN of its corresponding blade.