so, of the shaft. I can't find any 8/32 bolts longer than 3", I can't find
replacement parts for Malibu lights in any store that sells them, and I
can't find a web page for Malibu or any other way to contact their customer
service dept., if they even have one. Would appreciate any suggestions as
to how I might acquire a replacement for the bolt described above. Thanks
for your replies!

A hunk of metal rod and a tap and die set?
Or just buy threaded rod.