How do I do it? My director doesn't work Sundays, and I'll probably forget by Tuesday. My MIL has a USG, no idea where or when she got it... the v-blade is broken. I know she can buy a new one, she would also like to buy the crinkle cut blade from the UM if it will fit (I read that the blades are interchangeable - is that true?). Is it possible to order both? How do I do it?