I think there is only one real issue which caused these problems, all down to manufacturing tolerance. (where is not clear) This causes the bad calibration performance, and may contribute to the catastrophic mechanical failure - but that it the only failure which can be clearly identified by an end user. (as opposed to just not very good performance). Need to get hold of a tested nub to compare with.
- I'm not so sure about that. My left nub obviously suffers from the non-centring problem which I believe is due to poor tolerances (it broke after a month of use), while my right nub's issue doesn't seem to be mechanical at all. If I had to guess the problem with my right nub is caused by a bad trace, the calibration isn't exactly wrong, but it thinks i've moved it to the right no matter what direction i've moved it, and is like that until I move it to almost the most extreme position. No amount of recalibration changes its behaviour. --Cheese 19:37, 27 July 2010 (MEST)
- Sorry, yes - forgot that. Certainly the PCB on mine looked of marginal quality, with very fine traces.--Tsh 22:14, 27 July 2010 (MEST)