Well I had a thread going a couple weeks ago about the windsheild post covers and no one repros them and Jim Carter's has me on there parts wanted list. My Q is what is the purpose other than joining the roof to windsheild pillar?. What is everyone else doing on their trucks?, are the custom guys filling these areas?. I'm considering filling them but am concerned with stress cracks from cab movement. What have you guys done with yours? Thanks, Mike.