I bought a used but decent condition Nikon FE recently and I ran through a roll of Ilford HP5 400 iso film. I processed the roll and only frame 0, 9, and 36 were exposed. The rest if the roll was transparent. I remember shooting during a bright day and having the dial set to auto. Im testing out the shutter and see its not opening at 1/500 and 1/1000 on manual, and auto is working but also has trouble when pointed towards bright subjects. Does anyone have any advice on a fix or am I stuck with slower speeds? Thanks!