Line Lock- Quality?

Tell you what..........way back in the 70's I've seen a number of Hurst brand linelocks go bad. One went bad in my friend's 65 Chevelle around ??69. He was the original owner of what was later my 70 440-6. The one he installed in that car went bad on me when I had it. I had one in my beat up 62 Landcruiser (360/340. later 328) and another friend of mine had one go bad. I was not impressed with Hurst Line Lock