i keep having extreme calf burn to the point i have to stop a short time down the mtn. i have it even going straight down the mtn and not turning. im running union bindings and a 172cm skunk ape.
How upright are you standing? If you try to stand straight up you may be putting tension on your calfs that shouldn't be there. With knees well bent and a proper stance you shouldn't have calf burn.
I think the healthy burn that you should have after a day of boarding is in your thighs.