Most probably you are trying to show Standard 8 (otherwise known as Regular 8 or Normal 8) film on a Super-8 projector, or on a Dual-8 projector in its Super-8 mode; possibly you are trying the reverse of this (i.e. Super-8 film on a Standard 8 projector) - it depends on the specification of the Sankyo 2000H, which I don't have to hand.
The spacing of the sprocket holes differs between Std 8/R8/N8 and Super-8, as does their size and the size of the image area on the film.
David F. Symes
November 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix film projectors.