Jolinnar, it is wonderful to hear that you are loving the convenience of the double ovens on your LG LDEL7324YE, but we completely understand your concern after the ceramic cooktop cracked when placing your cast iron pot on the surface. Given your experience with ceramic cooktops, we appreciate why this would be especially concerning, and we also understand how difficult it can be when you are trying to determine whether there may have been any pre-existing damage and then find that the replacement part information is not readily available. We would appreciate the opportunity to review your situation and clarify the available options regarding the cooktop replacement and your extended warranty coverage. Our LG CareQ Team is available through https://www.lg.com/ca_en/support/contact-us/ with your model and serial numbers and proof of purchase handy, reference no. CNN260930819291, and we will be happy to assist with the next steps.