What holds the radio up on the drivers side? I have the bracket on the passenger side and it woks well. Now I'm trying to figure out what supports the drivers side. I can't see where there would have been a bracket. The passeneger side isheld up fine but the radio want to fall back on the drivers side. The assembly manual shows on side (the side I have) but not the other. Is there a bracket? Both 68 dashes I have show lots of wear; were the radio has been sitting on them.