That is one amazing reply-
Firstly the order was 4-3-1-2
Fuel was in the carbs.
Plugs 3,2&1 were still fitted during pot #4 was tested,,
Plug 4 was not fitted during test on #3 & so on.
All plugs are straw brown colour.
I will test again tomorrow,with no fuel & colder engine - that will be safer as I burnt my bloody hand getting the gauge out

Thanks again
Stu