question about rack damper pin

[MaGaS]

hey guys i have a 1983 mercedes 300 sd with 215,000KM on it. it has a shake at idle (when warm), and a stalling problem trying to stat when cold (if i hold the gas very lightly for about 20 seconds it will stay running).

i did a little research on here and starting messing around with the rack demper pin. i noticed small differences like now it is a little better at starting when cold, but shakes alot more. i want to buy the aftermarket one i see for sale here but am a little curious about a few things.

is there a certain way to take the original rack damper pin completely out? is there alot of small pieces that come out without it?

i read that there is a spring that gets ruined, but on the aftermarket one i do not see a spring at all (in the picture), or is it in the front where that little silver nose is?

do i have to use the original tightening nut in the front? because i dont see one with the aftermarket on in the picture.

thanks for all the help, george