I am a newbie, so take w/ a grain of salt. I agree the issue is not checking the temperature of the center of the pad often enough. Just two days ago, I had a yellow 4" lc pad litteraly fly apart as I lifted the pc off the paint at speed six (I was fatigued and not concentrating). Little yellow bits flew everywhere. As soon as it happened, I thought of this forum and wondered how the members here would react if they saw it happen in real time. Consequently, I kept checking the pad's center temp w/ my index finger. It was getting hot, believe me. I had steam on one, no, two occasions. Also, the center of the pad seemed to be collapsing, or losing support, as if the center material was vanishing. So, I learned to buy more pads. Since two days ago, I've ordered 16 pads. Big lesson learned. Did I mention it was w/ a porter cable too? Imagine if your flex wasn't powerful enough to desrtoy pads or it"s own backing plate. That would be even wearse.