@Wizcrafts I don´t really know cause I´m a real newbie in this but probably there is people doing just that, but I guess if you sew a lot it gets tiresome to do the job every time you need to change the needle. At least on domestic machines people sometimes do modifications to the machine instead, but I think that would be a shame on these old nice machines.
I am surprised that there seems to be no one specializing in doing custom needles to people. My opinion is that with the technology of today it would not be impossible to make needles with ok quality, but i may be wrong!
Regards,
Johan