I have a PC 690LRVS that I want to use in my router table, and I want to be able to accurately center it there. I can't figure out what/which centering cone (or another centering device) would work with it. The PC cone seems to be only for small PC routers -- is this correct? -- and I can't find a similar cone that PC makes for my size router, which would seem to make sense for them to do. I ordered a Rousseau centering device and think I can use it but the disk that goes on the pin is smaller than the hole in the nearest size insert in the base of my Rockler router table with Rockler base. Two questions: what will work for me? and Why aren't there obviously-matched cones or other products for EVERY combination of router and baseplate/insert since so many of us need to center the router in the baseplate of the table?