That's great! Thats exactly the result I had after cleaning and swapping the snesors, light throttle produced much more torque and power. They have slowly been getting worse and things getting sluggish again. Oil is back in the connector, it appears to be seeping through the sensor itself! Will get a new set on order soon!
To be honest I would use original o-rings if they are still rubber-like and not completely hard.
I would recommend clearing adaptations in the DME and EGS using INPA, that should make the DME and EGS adapt together and make the most of the new sensors.
Did you use genuine OEM sensors from the dealer? Did the sensors have any manufacturers names on?