Vibrating Clutch Pedal

I have a 99 Mustang Coupe....I just had a new clutch put in about 5 months ago. Now my clutch pedal vibrates when I'm at an idle....does anyone know how to fix this and if so it is an easy fix or is it going to be like installing a new clutch?

I would appreciate anyones knowledge!

Thanks!

I found this after a quick Google search ...

00-24-01
Vibration, clutch-vibration heard and/or felt at clutch pedal: This may be caused by clutch cable routing, lack of preload on the release lever, improper or failed release bearing, improper pressure plate-to-flywheel bolt torque, or out-of-parallel finger height on pressure plate.

Thanks for the information....I'll let ya know how it turns out!