I hate excessively dry smokes.

I have a Versailles humidor that I got off Cbid a few years ago and it has always been a struggle to keep it between 65-70 %  Lately it has been awful, even though the ambient humidity in the room is around 45% it still drops to 50% in a few days.  Yes, I seasoned it years ago before putting any cigars in it.

Right now I have less than 50 sticks and it is a 100ct humidor.

I have a 2x5 "Q" brand sponge that came with the humidor, a 2 "Q" sponge, and a Xicar 4" bead thingamabob, all currently moist with the Xicar glycol 70% solution.  Humidity stays between 50 and 60%.

I added an internal digital hygrometer and calibrated both that and the face-mounted mechanical one with the Boveda 75 kit, the digital was within 1% and the mechanical was within 3%, both were low.

Should I silicone the seams around the glass?
Should I give it away and buy one that maintains humidity electronically?

Yes, it appears to close tightly - I certainly can't press it down any further.

Yes I have a digital hygrometer, mentioned calibration in the OP by way of Boveda pack. I'll caulk the window seams and hope that helps.

Like already stated, more cigars will help balance out the space.
I hate glass-tops but I have one left on my side desk that is like a child....behaving most of the time but then there are those times when....well, you know!!!