I am going to start the tests again and carefully log the readings etc.using the tips provided by pizza man and red_2005.
Hopefully this will make my scribbled notes clear to me, as at the moment I am confusing myself.
After all this effort I can only say for sure that the 200 Ohm reading is correct.
The shocking truth is that I am not the brightest bulb on the Xmas tree, sparky stuff is not my thing. My reply to an electrical question is “Watt?”.