Joystick mods

[jimbop]

Apologies if this has been covered elsewhere but a quick search didn't yield much (probably due to the dual-meaning of 'mod').

What joystick mods have people found effective? I have the X52 Pro and have done the magnet mod to increase sensitivity at the centre as well as some old-fashioned cable-ties on the spring to loosen it up a bit.

I'm particular thinking of extending the shaft - has anyone done this? If so, is it effective at increasing fine control around the centre? Feel free to point me in the right direction of a previous thread, thanks.