I remember this one as a kid, only thing that threw me off finding was I thought main character was Fred Gwyne.  Thanks for the synopsis'.  Good job !  Many other ones I've recognized just by reading the brief plot summaries.  This one was very good and well done, enjoyable.  It's kinda cool listening to these after 35+ years having gone by, some of them have stuck in my head through the decdes, just like a Twilight Zone of an Outer Limits, etc.