On the 16v speedo there's a mark on the edge (below the stop pin) which is hidden behind the main cluster housing. I read somewhere that's the mark you preload the needle to. I did that when I had the cluster apart, then hooked up only the speedo to the cable, without the rest of the cluster, and took it for a test run with a gps. It was a bit off so I popped the needle back off. Took the car to 60 and popped it back on at 60. It was still a bit off, so I stopped at the corner, dragged it back over the stop, pulled it off, and re-positioned it a bit. Next run it was only off +/- 1mph so I decided to leave good enough alone and put everything back together. Haven't checked it since but I assume it's still right. I actually did this process twice cuz I had to take it apart again to fix my mistake i had made while fixing the odo. Keep in mind, when I did this, it seemed to be pretty picky how much preload there was, i.e., how far behind the stop pin i put it before dragging it back over. In other words, the speedo will be off if it is put on at the stop My needle was pretty flexible, never really threatened to break when I lifted it over the pin, but I was real careful anyway.