Hi, my older 3 SLX HFT planer lenses 80mm, 50mm and 150 will not fire on my new 6008I body but my new 40mm zeiss distagon works fine. The lenses make a slight click noise but then nothing. The DOF preview does not work either with these lenses. Are they supposed to work? Have tried everything, digital, film, new battery, nothing will fire when these lenses are on, then the 40mm goes on and everything is fine. The lenses fire fine on my old SLX from 1984 and my old 6003. I know the aperture doesn't show when these lenses are on a 6008 but why won't they fire the shutter? Thanks if you know.