Thank you so much for the post. I CAN'T BELIEVE IT! My xfire is black and i see bubbles in this spot. Thank you for pointing out. Glad it's not a white color paint! Freaks me out to see rust on my baby. What's the best product i can use to clear it up and STOP the cancer? I live in canada, (winter stored)and prefer to buy at a local store. What should i ask for? I stopped at Canadian Tire and didn't see a product matching my needs.