OK. Did an another experiment to check on cooling. This time without a thermostat. I ran the engine in the garage, garage temp is 100. I have a thermometer in the rad with the cap off to see water temp.
1. 0 mins temp at top of rad is 95, actual water temp is 95, bottom of rad 92, sensor temp for gauge 113
2. 2 mins temp at top of rad is 116, actual water temp is 118, bottom of rad 109, sensor temp for gauge 131
3. 4 mins temp at top of rad is 131, actual water temp is 130, bottom of rad 124, sensor temp for gauge 163
4. 6 mins temp at top of rad is 145, actual water temp is 142, bottom of rad 137, sensor temp for gauge 178
5. 8 mins temp at top of rad is 155, actual water temp is 152, bottom of rad 145, sensor temp for gauge 190
6. 10 mins temp at top of rad is 164 , actual water temp is 158, bottom of rad 156, sensor temp for gauge 204
7. 12 mins temp at top of rad is 168, actual water temp is 160, bottom of rad 160, sensor temp for gauge 207
8. 16 mins,temp at top of rad is 171, actual water temp is 171, bottom of rad 162, sensor temp for gauge 206


Took it for a drive will I was still testing - 5 mins stop and took readings, 106 outside

9. temp at top of rad is 206, actual water temp is n/a, bottom of rad 189, sensor temp for gauge 251

I will take radiator off and clean out and do a different head gasket.