I bought a 55qt model that was  internally misshapen and had poor gasket sealing and had some warping on the lid. It would leak water when tilted and I am sure it leaked air also.
 Called customer support and they sent me a new model 55qt to replace it. I opened the box and inspected the cooler and found it to be a much better cooler. Did not see any misshaped parts inside. The lid fit nicely also. Overall a big improvement. After I use it I will revisit this review in case I need to add another star.