Pop your action out, and take a look right in front of the recoil lug.
There is a relief for the action before the barrel channel starts.
I suspect that one of the molds at Stocky’s is putting out stocks where this relief is just a few hundredths of an inch too tight. Maybe it’s a thermal expansion issue when the mold is setting up.
Any way, pop your bottom metal out so you can see the bottom of your action, and how it sets onto the stock. With good fitment there shouldn’t be any extra space when the action sets in the stock. If the action relief cut is too tight, you won’t be able to get it to settle on the recoil lug, and you’ll have space between the action and stock when viewed from the the mag well channel.
I dremeled out the relief myself. But UM should fix it if the relief is too tight and you don’t want to work on it yourself.