Larry didn't discuss cast or cant, either, I guess you can ignore cast to a point and leave it neutral if you get the Monte Carlo part correct. I've been through a couple of shotgun stock fitments but neither time was any of it really broken down and explained to me.
I left the rough comb profile quite high on this Savage, you can ignore the steep back slant for now, that was a cut angle of convenience because I roughed the stock out on the table saw rather than band saw. I'll level the front some more before it's over and if I have to, put a little drop to the butt plate. I took some of the over-all drop out of the stock by curving the perch belly more and raising the toe about half an inch, and as I inlet the tangs I'm very slightly changing the angle there, too, to remove about 1/4" more drop at the toe. That alone should put the bore line and butt drop right where I need them to be, all I have to do then is work out the sight height, comb height, and comb thickness/taper after that. Trying to correct the fit for me yet somewhat keep to the lines that make these rifles what they are is a bit of a compromise.
BTW, I worked on it a couple more hours and got the stock slabs up against the receiver, now I have to sink it in about 1/8" more to form the tabs that tuck in behind the sides of the receiver, and final-fit the tangs. So far, so good.