Contact Cleaner fixed the clicking
I tried your idea of contact cleaner. Picked it up at Walmart for a couple dollars. Pulled the lever toward steering wheel and put the straw behind the stick. While moving the turn signal up and down I spayed in the cleaner. After about 5 seconds, I was done. That annoying clicking has been gone for 5 days. I was really not looking forward to replacing the signal switch on the column.