The economics become dramatic when you load a speciality film like Tech Pan. The film cost is about $2.50 for a 36 exposure roll, compared to $6+ for a prepackaged roll. Keep every thing very clean and protected from dust and you should have no problems. I keep my loader in a sealed freezer bag inside a tight box in a drawer. Same for the empty cassettes. Also the being able to roll any length of film is a money saver.(posted 8307 days ago)As to the last frames, I use the exposure counter on my motor drive to stop the film before I hit the exposed end.