Max, you sure you're talking about the same level I am? The one I got had the vial loose right out of the box, so it wasn't about setup. I checked it before use and it was already off by a solid 1/8 inch over just a couple feet.

Wonder if he'll add a U-Haul to that specific piece next.

Blame the town for sneaking those rule changes in.

I mean yeah it's easy to look back and say check it sooner, but most people don't know how much heat bleeds out of a simple hatch until they actually feel it. I had the same thing with my basement rim joist last winter - cold air was just pouring in through this tiny crack I'd ignored for years. You kind of have to get to that point of being sick of freezing rooms before you actually look around for the source. It's not like they teach this stuff in school, you know? So I get why the OP didn't catch it right away.

Cold kitchen wrecked my loaves too, try sticking the bowl on top of the fridge.