S/Hand clutch. Should I machine flywheel?

[dom14]

i'm worried about my clutch .. its been in there for over 20 years never even been looked at. with about 500 000km on the clock not sure how much more its got left. when i do have to change it its gunna be a full clutch kit, pressure plate thrust and spigot machine flywheel.

That's a great achievement mate. Mine has started making the funny smell when I was trying to back up the van few months back.
Still going good after that. It passed all the clutch tests, so I'm hopeful it will last few more trips.
I know nothing of my clutch history, so perhaps I should have it replaced anyway.
I do have a bad habit of not pressing the clutch all the way in all the time.
It's a bad habit, isn't it?