Does anyone here have experience with the Kodak EC Stack Holder? I just purchased one, but when I use it, it will load about 3 slides at a time (subsequently jamming up the projector). I have no idea what I'm doing wrong, because it seems pretty simple to setup.
These were designed for Kodak's cardboard slide mounts. In my experience, plastic mounts and other cardboard brands were troublesome. What mounts are you using?