of the attached pieces of the hero packs are cast on to these packs in foam. These packs also featured static lights and were attached to plywood motherboards with different straps compared to the GB1 heroes. Other than the bumper, wand and hosing/ribbon cable, everything was cast into the foam shell of the pack. Some of the packs from Ghostbusters I were used in the follow-up Ghostbusters II ; these packs were slightly redressed with a black crank knob and thinner ribbon cable. The angle of the gun, or "wand" mount was changed to pitch forward slightly, in order to make the prop easier for the actor to use. In addition to these redressed props, one of the originals was hastily cast as a buck to produce basic lightweight "midgrade" props (as a solution to complaints by the actors about the weight of the original prop). These midgrade pieces featured many details cast in as part of the mould, instead of separate fittings. The electronics and mechanisms were also cut down greatly, reducing the total weight. The original GB1 props would appear in close-ups, the midgrade in all other scenes, and new rubber "stunt" packs were made for whenever the actor needed to take a fall. The proton pack props from the Ghostbusters movies are some of the most wanted and collectible props ever made. Several GB2 packs have surfaced for auction. In September 2004, one rubber stunt and one fibreglass midgrade prop were auctioned by Profiles in History. The