Yep, none of them were deformed to a point where they were compromised. All pleats were in good shape and would have had plenty of room for oil flow. I tore apart a Fram Ultra and the pleats were the strongest I´ve encountered. I expect the M1 pleats to be the same. It is still laying in a tray on my bench, waiting to be torn apart. I´ll get around to it soon and will report back on the results. I didn´t tear the Mopar apart, but it looked very well constructed, too, and again, showed no sign of compromise.