bilstein shock absorbers

Good evening all! I’m offering a pair of complete front struts out of a ‘69 2800cs that appear to have some older bilstein HD inserts in them. Strut tops are quite worn. Spindles are in really nice shape, I don’t notice any pitting or scratches. I’m selling these as cores for rebuild. Offering...

When i hold the damper on the floor and pull up then at the top you hear that sound. it gets much louder when they are mounted on the car. i have tried all possibilities on the rubber mounts at the top. the original ones that came with etc. nothing helps. i think i have to change to something...