I did a couple of pair of our skis with a variable base edge bevel (And this IS what the guy is talking about) not side edge.
I absolutely hated it.
I think it was Whiteroom that said, leave your base edge alone! This IS correct. All maintenance work should be done on the side edge only. If you find you don't like the variable tune, it is very easy to increase the base bevel in the center of the ski to a 1 degree. If you have a true bar, you can readily and easily mark where the decreased base bevel begins and ends and increase the base bevel in that area to match the rest of the ski. You must use a file to do this and I would use a 18 TPC fine small file. I am not a fan of chromed files, by the way!
I Like this http://www.artechski.com/holmenkol-crystal-finish-racing-file-6-inch-18-tpcm/
The variable tune; It did not make the tips and tails feel less grabby (your tips and tails should not ever be grabby if you tune correctly & remove the hanging burr whether they are done at .5, .75 or 1 degree or if you have an alignment issue), it does the opposite. The tips and tails felt normal and under foot the edge or base or both felt like it was higher than the rest of the edge creating extra upward pressure in the middle of the ski .
In the graphic I provided below....The #1. Says Grip edge pressure starts under foot and extends towards the tip and tail. This is exactly what I hated about it. I just don't ski from the center of the ski out to the ends. Maybe this would be the cat's meow for someone, but not us!
We did my older boys skis too. By the way he is the Head Masters Coach for CMAC (Crystal Mountain Alpine Club) this year and flat tears up a GS course! (Super G and Downhill too) Is not bad a Slalom either. He hated it as much as I did!
It was very disconcerting.
And that is pure BS that that is how the Montana machine does it. Yes the Montana machine can do a radial tune I believe, but that is just 1 choice of many options.
After skiing on the progressive tune 3 times I re-tuned to a consistent base bevel and ...Booya! Awesome!
Personally I like a .75. But a true accurate, sharp burr free 1 degree, skis amazingly well!
And here is a usual setup!
Edited by Atomicman - 11/24/15 at 10:24am