A head for dispensing a thin film over a substrate is disclosed. The movable core is biased in a direction to separate from a fixed core by means of a return spring via the cap. The approach may simplify cylinder blow-through calculations and improve engine emissions via providing improved control of constituents reaching an exhaust after treatment device. The suspension system can provide a bias between the inner short and the outer short to a resting or neutral position, and the inner short may be a compression short. The produce data collector includes a light source for illuminating a produce item with light, collecting optics for collecting reflected light from the produce item including a Lambertian reflector, a light separating element which produces an image from collected light, and an image capture device which captures discrete wavelengths within the collected light. Moreover, a diameter of the upper seaming wires is equal to, great than or smaller than that of the lower seaming wires.