Thanks for the comments and further tips.  I cleaned on the outside, but did not disassemble the nut and clean inside. I t looked to be in good shape. I will definitely do that now. Thanks Joey.  I found some older images of this bass. The pickups are not original. Apparently the neck pickup was changed first. Then the bridge pickup.  Two more pics if you can stand it:  The first one shows the condition of the truss rod cover before refurbishing.  The second one shows the position of the different placement of the strap button.  

 

Your bass looks awesome - great to hear the story of how much work you put into refurbishing it!  
 
And you never have to apologize for more photos!
 
I like these early Stanley Clarke models with the signature on the headstock.

What!?!?!? No headstock photos you say.  

 

 

I gotta say again - that thing is classy!