NV3500 making noise
 

Hello everyone I've got a 1992 GMC Sierra with a 4.3 TBI with a NV3500 5 speed manual trans. I've rebuilt both engine and trans and it runs & shifts great but when the clutch is disengaged it makes a ticking sound, if I just rest my foot on the clutch pedal it stops? It's got a new flywheel, clutch, pressure plate& throwout and pilot bearing.
It sounds like maybe the throwout bearing and I sure don't want to pull it to replace a new part with a new part.
Does anyone know what this "tick" might be and a "easy" fix??? Lol