Problems with Control Wheel on Canon G11

There have been reports by many Canon G11 owners of malfunctions of the Control Wheel on the back.
This problem often is due to a lubricant used on the G11.
Cleaning the contacts underneath the Control Wheel will resume normal operation of the camera.
I use an electrical contract cleaner I purchase from Amazon. See photo

I don't take the camera apart at all.
I merely use the thin straw-like attachment to the spray can and inject a small amount of Contact Cleaner into the space under the Control Wheel, using the space that is around the circumference of the wheel.

Spray, rotate to distribute, spray, rotate to distribute, etc.

Only a very tiny amount of Contact Cleaner will be necessary.