For those wondering what happened to the Monster Valves, I'm back at it, and I'll finish this mini-series tonight.
Monster Valves and Mini Monster deflators can be installed with the tire still mounted, but I found out the hard way that it's possible to underestimate just how wide the tire's bead bundle is. On my first three attempts, I nicked the bead bundle. Oops.
What I found out is that the hole should be drilled as far away from the bead as possible. This sounds easy, but remember that you've got to not only drill a hole, but tap that hole once it's drilled. This means you need access for tools.
To place the hole, I used a 3/4-inch transfer punch. This is slightly fatter than the Mini Monster and proved to be a good guide for hole placement.
Once the hole is marked with the transfer punch, you drill the hole in progressive sizes until you reach the final 7/16-inch size.
I've got to go shoot some photos and round up a tech sheet for a feature vehicle.
I'll continue this later tonight.