What do you mean your window is the only thing holding your tailgate up?? you can't close the tailgate with the window up. put the window down, close the tailgate then raise the window. Sometimes I have to slam mine to get it to close right.
I took the panel off of the inside of the tailgate and put PB Blaster on every moving part that i could find and worked everything back and forth. Then i took the strikers off and flipped the little plastic things on them around so the latches have a new spot to catch. :rockon