Do the cab mountings springs in my 1/2 ton just cushion the pulling of the cab away from the frame? I am refering to the springs behind the seat that appear on my rolling basket case to only cushion as the cab flys upward. Or are there some missing springs that cushion on the downward push but are gone? Either way it seems a strange design as it seems the fron of the cab is fully hard bolted to the frame with only a rubber pad between.----dave