On my 85 wagon there was a coupler that went between the hard line and the top of the strut. You can see the coupler screwed into the strut above the 10 inch mark on the ruler in the below picture.
Over time, the coupler in my car developed a crack when the upper strut mount bolts came loose. Perhaps you just need a new set of these. I'd removed the carpet and check the upper strut area as vollpreuss mentioned in the earlier post.