Mmmm, instead of making fun of Kowal's English (did you read his signature ?) I'd be more interested of WHAT he is trying to say, rather then HOW.
I'm from Holland and English is not my native language so I must screw up sometimes as well, but please don't let's scare people away of sharing information just because of the language barrier.
If you use just a bit more than the usual braincells you are used to use, you will understand what he's saying:
1) (most important) The Suzo Inductive is one hellofa joystick and better than the p360
2) he doesn't like the looks of the original shaft (for me, it's a bit like sex: looks are nice, but what you FEEL counts

So I'm perfectly happy with the originals personaly

3) It's possible to replace the original shaft with another one WITHOUT using the magnetic material (it's not a magnet itself) that is originaly on the end of the shaft
4) you need to tweak the pots to make it work
Since I'm perfectly happy with the original shaft, I've thought about replacing it only once and discarded it right away because of the magnetic ring problem.
What you'd expect you need to do to get this work is reduce the diameter of the end of the replacement shaft. You'll need the tools and skill to do this.
Then you can TRY to remove the magnet ring from the original shaft. I doubt this can be done without actualy damaging the ring itself. As far as I know Suzo, they've made sure it will stay on forever.
All quite risky and too much hassle for most of us I think. Thus it was very low on my priority list.
So, Kowals experimenting is interesting info and I'm glad he shared it with us whilst knowing his English is like a Hong-Kong bootleg game manual.