clutch problems

[nds03]

hello everyone,
I just recently pulled out the t-5 on my 65 mustang to replace the flywheel ring gear. my clutch (centerforce) worked fine before I did this, but now i get chattering, a soft peddle, and a whining sound which sounds like the throwout bearing. but it only does this about half the times i drive it. what am i missing here? Ive changed the tranny a few times in this car and im pretty damn sure i did it right.

 

[2nd Mustang]

I just recently had my clutch changed also and my throw out bearing has a chattering sound once in awhile, usually after the engine warms up, but only when I step on the clutch pedal. So far so good, but only thing I can think of is the throw out bearing is new and settling in, but not really sure.