Ok,
Your input & time you have put into solving my problem is really appreciated.
However I have found that your original idea of swapping lat/long parameters did not work in streetview but since you suggested rolling back to Web Builder 7.1.0/Extension Builder 2.5.0 I did not initially swap long/lat.

Yes, yes, yes, I definitely missed that & having made the change everything loads just fine

However (don't you hate it when you hear that) I just loaded the co-ordinates for 9 sites within the same location, therefore the js script
overwrites whatever is in that folder & the last co-ordinates loaded displays for every site.
I now have 9 separate pages all showing the same google map location.
The obvious thing to do is change the 'map id' but if I do that the map does not load.
Is it possible to create different map id's in the same js folder?
I really appreciate the time you have put towards helping me resolve this situation
