The problem is that that damned "wheel bearing" is installed wrong, if anything it should go on top of the subframe between the subframe and the car
there are two more in the back that you can put some spacers in. Installation is rather easy actually, all you have to do is jack up the rear of the car using the diff as a jack point, put the car on jack stands, undo the bottom strut bolts, undo the 4 nuts and 4 bolts holding the subframe to the car (12mm for the bolts, 17 for the nuts) lower the jack and allow the subframe to drop slowly. Once the subframe "pegs" have cleared the subframe, all you have to do is put in the bushings and then do the steps in reverse. If you have a friend helping you it should only take about 30 mins to an hour with basic hand tools.