Hello! Had to find out today that my cooler is not very dense anymore. And it has a very thin (hair) crack in the top of the plastic (or whatever material it is). What do you think – can you fix it somehow? Glue or something? And if so, how or with what? Has anyone ever done this successfully? Must save at the moment, and there a new cooler doesn’t fit so well in the budget. Thanks for all the hints! Greeting Matze