Hello everyone, I've been a TF collector for many many years now, but one thing thats always concerned me is stress marks. I don't really understand them. I've bought several figures where they've had stress marks right out of the packaging and some which have just appeared out of every day play/transforming. Are these cracks within the plastic, or just areas that have become weaker? And will stress marks eventually lead to cracking of the plastic? I have Fall of Cybertron Generations Deluxe Jazz in hand at the moment. The rear of the car is comprised of two side panels pegging into the main body. The pegs are quite short and fat, so no real danger of breakage there. The hole for the peg on the side panels however, have been moulded too tight. In order to get the figure to transform correctly, i've had to apply some force to get the panels flush. The hole now has several stress marks around it, as its been stretched by the peg. At the moment, everything is fine. My concern though is that with repeated transformations, the hole will crack and then it won't have any hold at all, meaning it wont hold together. So can I ask, are stress marks something to worry about? And can anyone offer any advice about how they deal with stress marks? I know ultimately its nothing to lose sleep over as they're just toys. But, when you've spent a lot of money on a product, you want it to be robust. Sorry for the essay, thanks for reading!