Hello all! I bought a clear adapter plate to fit the bottom of my Ryobi router. I want to set this router up with a 5/8" guide bushing to do mortises in my new Morley mortiser jig that I just completed. None of the pre-drilled holes in the clear adapter plate fit my router so I will have to drill new ones. I have the centering cone fixture to position the plate exactly center to the router shaft, but I am at a loss as to how to precisely mark the position of the holes to drill. I can see through the plate to the router holes underneath, but I don't think I can precisely drill them very well that way. I spent a lot of effort to build my jig with very close tolerances for repeatable accuracy. I hate to lose all of that with a guide bushing that is not centered because my adapter plate holes are slightly off. The holes that I need to drill are fairly large to fit a 5/16" screw as that's what is required for the router.
Any tips or ideas would be very much appreciated. Thank You!