I put grease on the lip and bent the clips to be a little tighter, but I believe some people also put a bead of silicon on the lid I probably never go real deep though bottom of the gas tank and I am ready to get out.
Try spraying the airbox openning w/ silicone spray or WD-40. Then put silicone on the lid and put them together. Once the silcon cures it will mold itself to the box and you will be able to remove it easier.
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