The reaming deal looked good except the pilot gets a little spindly because it is a reamer essentially....you're losing the strength at the flutes, compared to the solid pilot. It obviously runs as a live pilot after it reams. Probably be best to ream, then install the pilot & cut seat with the pilot but for production work where you're trying to knock stuff out like DART was I can see where it would be handy to finish the guide & cut seat all in one.