Help, Humidor Problems! Warped lid

[diabolus]

Open: http://www.prometheuskkp.com/10cigar-big.htm

Closed: http://www.prometheuskkp.com/m-redmidorra-big.htm

I purchased this humidor a couple of years ago and it has been great. It still looks brand new but the lid has warped a bit and does not create a good seal. Does anyone know if it is possible to have this repaired?

I never had this humidor over 70% and I dont know why it warped like this.

Any info would be great, thanks.