Hi, I know there are quite a few users here use Phase backs on Hassie Flexbody. I have a questions about the stray light mask. Do you remove it when you mount your Phase back on Flexbody? According to the users manual, this mask is to prevent the stray light degrading imaging quality when applying large rise/fall and tilt movement. For some reason, I can not mount my P45 with the stray light mask left on the back standard. I can mount my P45 with ease after remove the mask, but I am not sure it is the right thing to do. What is your experience? Many thanks!Thomas