Violent Take-Off Shudder
Do you now have a Double Disc Clutch assembly from Brewer's?
Single Disc Clutch Assembly?
Clutch Disc Type, Sprung or Unsprung?
And Clutch Disc Material? (sounds like you have Ceramic both Sides???)
This has been a little over-answered. Unsprung clutches are not at all uncommon in clutch kits for conventional upgrade paths.
The main difference is they grab much more abruptly. Especially if you have ceramic pucks. And they rattle on deccel.
(An upgraded clutch can ruin your experience altogether.) Choose Wisely