I've found that they only way I can use my Lee filter system (for ND grads etc) on my GSW 690 is to stack sufficient screw-on filters so that they protrude past the lens shade. This is clearly a problem if I don't want to use a screw-on filter! I realise I could use a couple of UV filters, but I don't like to add unnecessary glass in front of the lens. Has anyone found a way to remove the lens shade? I am wary of doing anything that may damage the front element, or lead to dust etc. in the shutter - I don't mind if the removal process is irreversible.