Yes I found that out when doing my brakes, there are two 17 bolts that are on the top and bottom the ones on the top also hold the bracket for the brake lines. If you loosen off the bolts on the top only you will notice the oil starting to drip out from the swivel ball, take the bolts out completely and under the plate there will be some shims. Remove one of the shims and replace the bolts this will push the swivel pin and bearing down and should stop any movement and stop any oil leaking out.
Rob