are you sure you allowed enough time for you humidor to season properly? If you rush this, youre just going to cause yourself aggravation.
You can try some thin weatherstripping on the left side. After doing that I would keep your cigars in a tupperware container and season your humidor for another 7 to 10 days.
However, to be perfectly honest, I wouldnt go through the trouble. Put that humi up on craigslist, keep your cigars in a tupperware container for now, and save up for a really nice 5 times bigger than you think youll ever fill humidor. But thats just my
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"One fart can foul the air for everyone" - Esteemed philosopher
"If avoiding the nasty $hit is being a snob, them I am guilty as charged."- Same esteemed philosopher.