All I need some help here. My bike is nearly out of guarantee so I am going to start some spannering

.
As it is now summer in UK the rain is a bit warmer and when it gets hot my clutch still gets clunky at low speed & revs

. I have improved it a bit by re-routing the clutch cable & replacing

it but it still clunks

.
I remember some one on this site wrote about rebuilding the clutch & replacing the "bullet". Has anyone still here done that job?
Is it fairly simple?
Do I need special tools?
Jon
:???: