The rear air bags have been acting weird for a while now, it started out only going down at night, but then it started going down all the time, even while driving, and now they wont even come up at all.. I didn't know what to do, money is tight right now but I can't stand bouncing around all the time while driving.. I didn't know if there was an alternative to the air bags, like if I could get something cheaper that basically does the same job? Anyways I would really appreciate any advice you could give me... Thanks