Sorry but I am anti spacer, unfortunately I'm an engineer and know the effects they can have. As the centre line of the wheel is moved out from the car, this puts excess load on all the parts that the item is attached to. Fitting spacers will accelerate wear on everything rotating as it was designed with a specific load generated on the manufactures offset. This means wheel bearings, ball joints, I have even seen bent rear beams in extreme cases. So not only does it effect the performance and handling of the car it can actually be dangerous and cause all sorts of problems. The symptoms you describe do sound like a front lower ballpoint, but I would advise you get it checked out.