I look at weather stripping as a last resort for a humi you can't return or have some kind of attachment to.

In this case. I would return it.

Also keep in mind that when it is full of cigars the cigars themselves will help to stabilized RH fluctuations.

But it sounds like the seal is poor and you shouldn't have to fix it.

Try cheaphumidors.com or tampahumidor.com they both sell quality stuff and stand by their products.

Also, there should be a little dial on the back of the analog model. It allows you to calibrate it. Take the madeline product, put it in a zip lock back with the digital and the analog. Then after 24 hours, turn the knob on the analog to match the digital. Now presuming your digital is working right, your analog will now be approximately within the variable range of the digital.