Cam-Car- I just got my cans of Jig, and just like you said,"most have a cracked lid". All my cracked lids were strangely identical. A weird "Y". Now even the boys from The Adventures of Bob & Doug McKenzie: Strange Brew, would have caught a manufacturing problem like that- so it probably occurs after it ships. My guess is the shipping boxes holding the cans cannot take much of a load, and if you stack the boxes, the load pushes the lid of the cans in the bottom box down so hard it cracks the plastic when stretched over the lip of the can. I also suspect they allow a very high % of regrind plastic in the lid that weakens it. They also have a design flaw in that the ribs inside the lid to give it strength actually cause the crack when the top is pushed down, each rib puts a lot of force against the wall of the lid and one of them will fail, but the failure point is always at a rib showing the cause was the lid getting pushed down past a limit that is not forgiving. Contrast that to the lid of a Krylon clear coat can that could take an elephant stomp and still stand.