Most 16mm camera film used to be sold double perfed. (even for productions with sound - since sound was generally double system) so A lot of cameras were made with double perf sprockets. Many Many more were made with single pref sprockets, and those can take both double and single perf stock.
some filmmakers came up with the idea of enlarging the gate on a movie camera to allow the image to also use the area where the second row of perforations was originally placed. the film could then be enlarged in printing to 35mm or scanned to wide screen video. This method was called "Super 16"
Kodak liked the idea as it made film origination more ecconomical, and so encouraged film use, so they changed the default stocked format of 16mm Camera stock to single perf. This of course causes problems if you have an older camera with double perf sprokets, or one with the pull down claw on the "soundtrack" side.
This is why a couple of hundred posts back someone was asking FILMFerrania if they were going to make double perf 16mm stock, which Dave said was not in the initial batch plan.
Since you are in NYC, take the camera in to DUall
http://www.duallcamera.com/ and they can tell you if it needs to be modified.