dad was installing my shocks and the line from the rezzie to the shock came off and hydro fluid went everywhere he said, so he filled it back up and bleeded all the pressure out -- now he says we need to pressureize it with air... i dont know if this is right not... i dont even know if its hydro fluid that is in there, also, there are 3 adjusters, one on th ebotton and one on the top and then the compression one, what do they all do?