I would check them yourself. Sorry I dont have a pic so I will try to explain, from my (usually poor ) memory.
On the wishbone toward the wheel end you will see a small shaft linking the wishbone to the anti roll bar, its only about 2 inches long.
There will be a nut holding it in place and in the centre of the thread the nut is on will be a hole for an allen key to stop it turning while you turn the nut. (both ends are the same IIRC)
If your unlucky it will be rusty and the hexagon in the hole will round off.
Try to get at it with the car on the ground, if you cant with the car up and well supported jack under the outer balljoint (use some wood) just to move the arm up a little.
Put ring end of the spanner on the nut, allen key in the end, hold it, while tightening the nut.
The should be tight, even 1/2 a turn loose is enough to cause some real nasty noises over bumps.