"Gary
So essentially how my advance set was done is right?, and if it would of started raining 11 mins b4 start my guys would of switch to wets on the start grid?
ive got it set for when rains after 1 lap. is that right or need it set to zero laps?
You did set up correctly. If it had started raining at any point before the cars set up on the grid (i.e. before 10 minutes before the start time) then they would have put on Wets. They would do this no matter what you had selected for the number of laps delay you have set. So I'm sorry, but I expect the weather changed after the cars lined up on the start line and they would have been stuck with dry tyres. The recent update only addressed the 20 minute period from setup lockdown and the moment the main race is set up.
If you want your car to pit at the next available stop to change tyres if the weather changes then you should select a delay of 0 laps. If you select 1 lap, then your driver will do a full lap from the point that it starts raining, and only then will consider pitting.