bad throwout bearing?????

[lars70ss]

Hi everybody, just put in a new muncie m22,bellhousing, clutch fork, centerforce 11" flywheel, dfx clutch,pressure plate and throwout bearing. Got about 100mi on it and one day sitting at a light, clutch in tranny starts loud groaning/growling noise... Let clutch out it goes away, strange thing is it does not do it all the time, but then again it just started doing it the last 3 rides. I'm pretty sure it's just a bad throwout bearing, just wanted to know if this has happened to anyone or have herd of a new bearing just going bad so quick?