Put a flashlight in your humidor and check for leaks. If you see light, you will never keep your humidity stable.lots of fixes from tape to thin weatherstripping to seal it
Logistics cannot win a war, but its absence or inadequacy can cause defeat. FM100-5
I would not worry too much about 60 in the dry winter. I prefer 62-63, so if it drops 2-3 percent this time of year I don't sweat it. Add some more cigars will help maintain better as well
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Or it may need to be re-seasoned and more or larger packs put in.
Money can't buy happiness, but it can buy cigars and that's close enough.
My favorite cigar list here