your clutch is fine. quit being such a worry wart!
for one: upgraded hydros make it easier to push a heavier clutch. my 3600 is no heavier than the stocker was due to the new hydros.
two: you are complaining that your trucks clutch doesn't chatter?! chatter will come in time lol...
mine went for months before it started chattering in neutral at idle. (foot off the clutch) soon as you push the clutch in it stops chattering. it was dead silent till a couple weeks ago. just takes then a while to break in.