I have an issue with GE Silicone II. You will find, in VERY fine print, on the label, that it must be stored at below 80ºF. Now, depending on the time of year, and what state you live in, it is possible that during transport, warehouse storage, delivery, and even in your own truck, that it may be overheated at some point. If it is too hot for too long, the result is that the product will fail to cure completely. GE will replace the product but not compensate your labor.