Seems to me with a 5/32" guide bar/pin with a 5/32" blade or bit set 1/8 of an inch from it you could get what you want. Make the pin from a 5/32" drill bit. Use a dado blade set that makes a 5/32" kerf. Take the pin out to make your first space since it is farther from the edge. Put the pin back in, then step over it for each new cut until you have all you need. All this could be done with a sacrificial backer board screwed to your miter gauge. Make the initial pass through the backer board. Remove then take time to drill the hole for the 5/32" bit precisely 1/8" from it.