They do exist, in 16mm film. The hybrid versions you mention are video dubs with Season 2 titles and bumpers cut into Season 1 shows. Those versions are one-inch video dubs made from 2-inch Quad. They also have various segments (not entire shows as aired) in 35mm. This is according to the late Earl Kress. If they did new transfers of the 16mm one-hour shows with the Season 2 bits from the Quad tapes as extras, I'd be okay with that.