clutch

i had my clutch replaced on my st220 a few months ago but the clutch just does not seem right the clutch shudders I can feel a wobble in first gear through the gear stick, and also at 30mph in 4th gear you can take it out of gear without the clutch being dis-engaged, also not much of a bite point you feel it pull up then before you know it your foot is off the peddle. what do you guys think ?