There is definitely something wrong there. Maybe they didnt add a spacer ring on the cartridge or didnt fill the housing with oil.

Metal shouldnt rub on metal. That strut housing cap is going to leak very soon if it isnt already.

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)