Not for the sake of argument, just for my personal knowledge, but isn't
Menzerna made for very specific environments, where the temperature, humidity, type of paint, and machinery is taken into consideration? Since
Menzerna was never made for the shade-tree detailer, could it be that "errors" are creeping into the product by the way we are using it?
On a personal note, I have always been very pleased with my SIP (when it's not humid outside) and above all, my 85RD.