Yeah, I've done a couple of them, about 3 years between. Both times I did some research, and both times I found a lot of missinformation. Yankee message boards are full of horror stories about being unable to get the pull below several pounds, and problems with the safety. However there are always a few comments from the real world, and of course the Weatherby folks actually will explain how to do it properly.
The Vanguard trigger is not as good as the Remington perhaps, but as far as I'm concerned is about the easiest of all to get down to a reasonable level without risk, and way better than those on the M70.
The last one I did was for a guy who has hunted and shot all his life with Brno set triggers and a couple of Ruger #1s with aftermarket triggers. He's a very happy camper, and it wasn't necessary to remove any metal or do anything other than to read and follow the directions.
Maybe I've just been lucky. As I said above there are lots of stories about the problems...real or imagined. However there are tales and myths about almost every aspect of shooting, and my admittedly limited experience suggests that this is another of those situations.