I just bought a 1994 Rodeo LS 3.2 4X4. Pretty much everything is perfect except for one thing. This model is equipped with a sunroof and it appears that the glass is supposed to be retracted by twisting the **** on the roof. Mine doesn't do anything when I twist the ****. Am I correct about what the **** is supposed to control? If so, does anyone have any ideas on how to get it working again?