Quoted from o-din:Easy, if you have the correct equipment.
Quoted from MikeO:Unfortunately I don't have the drill press.
Drill press for sure. By hand would be a 100% fail IMO. Maybe a friend close to you has one? I like the idea of the Gottlieb Ring. Of course you could always contact Wade Krauss and get a new playfield with only 20 people needed and a 3 year wait ...... on second thought go for the drill press.