( Jools I am sorry ! )
You where right, I tested the sensor and got no resistance so I asked my new mate at Cornerspeed and he showed me that they do on a bike he was working on, I got one of him and just put it on and ( bob’s your job ) It works, so im back on the road.
So it must have had nothing to do with the drop at the track day???
Thank all of you for your help, I can book that track attack 4 now.