Just did this mod using the parts suggested from Home Depot. No chipping and it worked out excellent. I did not need to chamfer the hole, the rod threaded in perfectly. I also just used the 3/8 drill bit only instead of drilling a pilot hole and then enlarge. Thanks for the tip.
I just carved my first ever attempted apple brined turkey. It ws a 13 pound bird and I cooked it at about 260 for 5 hours. All I can say is WOW, this is by far the best turkey I have ever cooked. Thanks to all for the tips.
It is a little small and I was there for a late lunch so seating wasn't a problem. I live 1 exit south of there so its easy for me to check it out various times.