Hi, I'm new to this forum, but I have an old 35mm 2x2 slide projector belonging to a friend, and have no instruction manual. The projector is a Gnome Classic IQ 744. I am unsure what is the correct bulb for this unit. It had a defective 12v 50w gy6.35 halogen bulb in it and this seems rather low powered to me, but I don't want to risk a 100w in case it overloads the transformer. Can any one advise me what is the correct bulb for this unit, please?