One Used Respiratory System.
Full system including nose and nasal passage and accompanying pair of lungs being offered.
Owner recommends that system be used for scrap as it is in serious state of disrepair.
Items offered have shown tendency to leak profusely when warmed up. Otherwise extensive cleaning required to restore normal function which is obstructed by solidified residue.
Items also have shown a tendency to overheat.
Owner willing to negotiate other more efficient system is currently sought (gills maybe?).
That's as much griping as I'm going to do.