FA-003 pads must be over-stretched to use withT50RP, so much so they tend to rip. I have several on hand from Billy at Noisymotel dot com. Very nice fellow, btw.
I use double side adhesive that comes in a 3 x 3 feet sheet, making custom shapes possible, and tape them on; and easy off. Note that changing the shape and tension of pads changes the sound FR and resonant frequency just as using different density foam, pleather, leather, and velour.
Search the Wow T50RP thread for micmacmo's FA-003 inner tube flap mod. This works great for durability and easy on/off. He has a detailed tutorial showing how to make your own.
Thanks mate. I initially thought I'll try to extend them but I'll now try to search for the thread and make a inner tube flap mod and will hopefully listen to them. The thing is that I've heard they are good pads for the Fostex. I was initially partial towards the shure pads because of their apparent ease of use.