are the studs broken? if so fix them. go to the store and pick up a new stud that looks like this.
0.75 with the nut and washer , each.
use a small cut off grinder to cut the rest of the stud off. drill a 1/8" hole in the center of the stud. then drill the hole 2 sizes smaller then the new stud. only drill into the metal bracket. the 1/8" hole you put into the rubber is enough. then the screw end of the stud will cut it's own threads in the rubber. loctite the screw end and install. lock 2 nuts on the bolt side so you can turn it in with a socket.
then it unlock the 2 nuts with 2 wrenches and your done.