I'm approaching this differently.
I'm not sure if you're wearing glove liners or not but this might be a sign that everything is working properly. I wore gloves with a liner and just switched to mittens with a liner (fingered). The liner wicks the sweat away from my hand and to the inside of the shell.
I skied today from 0930 until 4 with one break for 20ish minutes. I spent more time in line for the lift and on the lift than actually skiing. With the windchill this morning it was around -2 F; at least in the morning. The wind was wipping on the lift. My hands were warm the entire time but when I got home, I noticed the inside of my mittens were soaked! The liners were dry though. The liners might have dried out before I checked them
I have several pairs of liners should the liners get wet but the entire time I was wearing the mittens, I thought my hands were dry.
I'm just going to make sure I put the mittens on the boot dryer once my boots are done.
BTW. EMS mittens with a finger liner on sale for $28
Reg $40. Goggle scraper and nose wipe.