Front End Squeak

[armkb]

What is the most common cause of the front end squeak on the 126 chassis? Have checked my ball joints, bushings, strut bushings, and they seem fine. I did have a leak at the oil cooler awhile ago that sprayed onto the lower control arm and brake components, and yes it did destroy the strut to arm bushing and the dust seals in the caliper. Replaced them and still have the squeak.
Was thinking about rebuilding front end but the parts seem fine so it would be a waste of money and time. It sounds like it may be coming from the coil spring as it only does it during an up and down movement. Doesnt do it when the wheels are turned. Is there a bushing or pad between the coil and the lower conrtol arm that may have wore out that may be causing the squeak?