Brinsea Maxi Ex lockdown humidity

[DonyaQuick]

I'm having a bit of a confusing situation with my Brinsea Maxi 24 Ex; it has the built-in humidity pump hooked up to an external water reservoir. There are 2 eggs in it currently and I'm a day into lockdown. The chamber is not being able to get all the way up to the 70% humidity that I set it to. It's running at 65-68% and draining a LOT of water from the external reservoir just to stay there. The air valve is at its lowest setting, which is all the manual suggets. I have a sensor in there confirming the readings, so I think it's basically running at its limit and can't go any higher. I have checked that the lid is well-seated. My room humidity is 30% which I know is contributing to the problem; not a lot I can do about that unfortunately, I mostly have to focus on keeping the room warm enough. Maybe I shouldn't be worrying with this particular incubator and the level it's holding at right now, but I had to raise it above 70% a couple times in the past with a different incubator to prevent shrink wrapping. With that other incubator, I would just pop in a warm wet paper towl to accomplish that if it was needed, but is that something I can do safely with the cardboard bottom in there? Or is there some other humidity-raising trick with the Brinsea that I'm missing?

For context, I started this incubation round with 14 eggs, and at pre-lockdown candling 12 showed nothing. Of the remaining two, I have one that definitely has a wiggling chick and another that is essentially un-candleable so I'm giving it hte benefit of the doubt even if I'm not really optimistic about it. I don't know if having just 2 eggs in there could be contributing to the humidity struggling.

 

[Tex452]

I don’t have a Brinsea, and I dry hatch only, I never had the problem with having just two eggs Left, the lowest I had was 8 fertile eggs from a friend that had one rooster on thirty hens out of 22, all 8 eggs hatched.
The humidity didn’t spike as high when the eggs started hatching as when the incubator was full, but I never add any water even at lockdown.