there is no concern with mountings, engine tuning, cng tuning etc etc....
@ all
plz reply the querry if u really know that y the problem is occuring. dont misguide the members.
@ poster.
this is called juddering, the surface of the flywheel and the clutch plate is not even. thats y it vibrates until u release the clutch completely.
simply change ur clutch plate, pressure plate, clutch bearing and dont forget to get the flywheel polished by a qualified machinist and after polishing, ask him to chk the runout with the help of dial guage.